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Georgieva-Bozhkova K, Konstantinova D, Nenova-Nogalcheva A, Nedelchev D. The impact of diastema on the articulation of speech sounds. Folia Med (Plovdiv) 2025; 67. [PMID: 40270173 DOI: 10.3897/folmed.67.e144621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2024] [Accepted: 01/20/2025] [Indexed: 04/25/2025] Open
Abstract
INTRODUCTION The faculty of speech in humans is a distinguishing trait that sets them apart from all other biological species. Speech production is typically achieved through the processes of phonation and articulation. The acoustic method of studying speech is an individual auditory approach based on hearing as a biological analyzer.
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Chiddarwar R, Bhoyar A, Dubey SA, Dhamande MM, Khubchandani SR. Refining Complete Dentures: Optimizing Results with Enhanced Phonetics and Esthetics. Cureus 2024; 16:e62938. [PMID: 39044878 PMCID: PMC11263897 DOI: 10.7759/cureus.62938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 06/22/2024] [Indexed: 07/25/2024] Open
Abstract
Tooth loss and subsequent complete denture rehabilitation can profoundly affect a patient's psychological and social well-being. Dentures play an important role in helping individuals regain a sense of normalcy as well as facilitating communication in today's appearance-conscious society. However, common issues with dentures include discomfort while chewing and dissatisfaction with esthetics and speech. Prosthetic rehabilitation for complete denture patients should aim not just at replacing missing teeth but at fully restoring masticatory functions and appearance. This article outlines a simple, economical, and esthetically pleasing approach to rehabilitating patients with complete dentures, particularly those with resorbed ridges and with difficulty in phonetics. The focus is on comprehensively restoring the patient's orofacial complex.
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Affiliation(s)
- Rucha Chiddarwar
- Prosthodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, IND
| | - Anjali Bhoyar
- Prosthodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, IND
| | - Surekha A Dubey
- Prosthodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, IND
| | - Mithilesh M Dhamande
- Prosthodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, IND
| | - Sheetal R Khubchandani
- Prosthodontics, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, IND
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Shukla AK, Chaturvedi S, Ahmed AR, Abouzeid HL, Suleman G, Sharif RA, Gurumurthy V, Cicciù M, Minervini G. Analysis of modified palatal surface for better speech in edentulous patients: A clinico-analytical study. Technol Health Care 2024; 32:1055-1065. [PMID: 37483039 DOI: 10.3233/thc-230477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
BACKGROUND Phonetics with mechanics and aesthetics are considered cardinal factors contributing to the success of complete dentures. OBJECTIVE The aim of the current study was to evaluate the changes in speech in complete denture patients with and without palatal surface changes. METHODS The data collected for the study involved completely edentulous Patients (n= 80). Patients were divided into two groups. Group A: Up to 50 years (n= 40); Group B: Above 50 years (n= 40) (including male and female). Each group was further divided into four subgroups for speech analysis-without dentures (A1/B1); with conventional dentures (A2/B2); dentures with a palatogram (A3/B3) and dentures with palate sandblasted (A4/B4). The speech sounds of all patients were evaluated for pitch and intensity using a spectrophotogram (Praat software) and Likert scale. The data so obtained from the quantitative and qualitative analysis were statistically analysed through one-way ANOVA, unpaired student's t-test, and Pearson correlation coefficient. Qualitative analysis was done with the Mann-Whitney U test. RESULTS The maximum mean value of the pitch and intensity in Groups A and B was subgroup A3 (Palatogram) 190.37 ± 21.50 and 77.07 ± 7.58, B3 (Palatogram) 190.87 ± 24.36 and 75.33 ± 8.12. When comparing Groups A [A1, A2, A3, A4] and B [B1, B2, B3, B4] on the basis of pitch and intensity, a statistically insignificant value was found. No changes in speech sounds (pitch and intensity) were observed in terms of age. Both quantitative and qualitative analysis results showed that speech sounds in the patients with palatogram, had the highest pitch and intensity and were most clear to the listener and there were statistically significant differences from other groups. CONCLUSION Speech was better in palatogram-based dentures in comparison to a sandblasted denture, conventional denture and without denture in terms of qualitative and quantitative analysis. The physiologic nature of the palatogram fabrication technique produces the palatal part of the denture more compatible with the tongue, thus producing better speech.
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Affiliation(s)
- Anuj K Shukla
- Department of Dentistry, Government Medical College, and Hospital Ratlam, Madhya Pradesh, India
| | - Saurabh Chaturvedi
- Department of Prosthetic Dentistry, College of Dentistry King Khalid University, Abha, Saudi Arabia
| | - Abdul Razzaq Ahmed
- Department of Prosthetic Dentistry, College of Dentistry King Khalid University, Abha, Saudi Arabia
| | - Hoda Lofty Abouzeid
- Department of Prosthetic Dentistry, College of Dentistry King Khalid University, Abha, Saudi Arabia
| | - Ghazala Suleman
- Department of Prosthetic Dentistry, College of Dentistry King Khalid University, Abha, Saudi Arabia
| | - Rania A Sharif
- Department of Prosthetic Dentistry, College of Dentistry King Khalid University, Abha, Saudi Arabia
| | - Vishwanath Gurumurthy
- Department of Dental Technology, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Marco Cicciù
- Department of Biomedical and Surgical and Biomedical Sciences, Catania University, Catania, Italy
| | - Giuseppe Minervini
- Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy
- Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India
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Muacevic A, Adler JR, Ahmed R, Anwar S, Shaikh Omar FA, Hadi Tairan E. A Detailed Correlation of Oral-Health-Related Quality of Life of Patients Undergoing Fixed Orthodontic Therapy. Cureus 2023; 15:e33854. [PMID: 36819417 PMCID: PMC9937642 DOI: 10.7759/cureus.33854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 01/15/2023] [Indexed: 01/18/2023] Open
Abstract
Malocclusion is a dental condition that can affect both children's and adolescents' oral-health-related quality of life (OHRQoL), and the seriousness of the condition is indicated by the patient's requirement for orthodontic therapy. The patient or his or her caretaker may personally report the necessity for orthodontic therapy, or the doctor or orthodontist may quantify it objectively. However, discrepancies in the requirement for either objective orthodontic therapy or subjective orthodontic therapy have been noted. The OHRQoL measurements should be used in conjunction with the indicator of orthodontic therapy requirement to represent the patient's anticipated treatment requirement. Some systematic reviews have revealed evidence that malocclusion has a detrimental effect on OHRQoL. In addition to the effects of malocclusion, the impact of orthodontic therapy on OHRQoL has also been documented. There is a dearth of related follow-up studies, particularly those documenting OHRQoL improvements in adolescents both before the beginning of treatment and termination of orthodontics treatment. Additionally, it has been hypothesized that self-esteem affects OHRQoL, albeit there is insufficient data to support either its specific function or its connection to perceptions of oral health. As a result, the purpose of this literature review is to determine whether patients receiving fixed orthodontic therapy report any changes in their reported OHRQoL. There was an extensive review of available original research, case reports, systematic reviews, literature reviews, etc., available in reliable sources of information like PubMed, Scopus, Web of Science, etc. The review found that the process of receiving orthodontic therapy might be unpleasant, affecting OHRQoL. The discomfort caused by orthodontic equipment, which are foreign things put into a delicate portion of the body, is both psychological and physical. Such discomfort may have a detrimental effect on the patient's willingness to receive therapy, their participation, and the treatment's effectiveness. The main sources of discomfort that patients undergoing fixed orthodontic treatment report are the appliance's design, amount of force used in the early stages of their therapy, prior painful memories, emotional variables, cognitive variables, and environmental factors such as age, sex, and culture. As a result, orthodontic treatment may have negative effects on a person's QoL that, in most situations, are temporary.
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Muacevic A, Adler JR, Dharaskar S, Fatima N, Salkar M, Dhopte A. To Study the Effect of Anterior Palatal Surface Modifications of Complete Denture on Speech Intelligibility Oral Perception and Cortical Brain Function Activity: An In Vivo Study. Cureus 2023; 15:e33595. [PMID: 36779152 PMCID: PMC9910224 DOI: 10.7759/cureus.33595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The classic maxillary full denture covers the whole palate, preventing the tongue from touching the denture base tissues itself. Thus, it has deleterious effects on cortical brain function and the ability to understand spoken language. AIM This study aimed to determine the effect of anterior palatal surface modifications of the complete denture on speech intelligibility oral perception and cortical brain function activity. METHODS AND MATERIALS This study compared the speech clarity, oral discernment, and cortical mind capability activity of complete denture wearers in three study groups: a) complete denture wearers with a small opening (SO) in the maxillary front palatal base; b) complete denture patients who wear regular complete denture; c) complete denture patients who did not wear complete denture; and d) complete denture patients who wear a functionally contoured modified palate (FCMP). Patients with no teeth at all underwent four phases of testing to assess their cognitive abilities and speech quality (pitch and volume). In the first phase, partial dentures were used. During phase 2, a conventional full denture was inserted. In the third phase, a palatal base denture was functionally altered. In phase 4, dentures with a little aperture at the front of the palatal base were used. Results: The values of pitch and intensity of sound in category A with FCMP modification I were 180.76 ± 24.12 and 73.27 ± 9.74, respectively. On the other hand, the values of pitch and intensity of sound in category B with FCMP modification I were 185.41 ± 27.29 and 73.91 ± 8.31, respectively. The values of pitch and intensity of sound in category A with SO modification II were 188.52 ± 21.11 and 76.13 ± 5.21, respectively. On the other hand, the values of pitch and intensity of sound in category B with SO modification II were 194.59 ± 24.02 and 75.21 ± 6.12, respectively. The findings for values of pitch and intensity were statistically significant among the four phases (p < 0.001). The highest speech intelligibility and cortical brain function were observed in phase 4 in both categories A and B, with the highest scores by experts of 3.21 and 3.42, respectively. Conclusion: Based on the findings of this in vivo investigation, it can be concluded that using modified dentures (modification types I and II) following denture installation improves speech intelligibility, oral perception, and cortical brain function activity.
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Students' Awareness of the Role of Phonetics in Construction of Removable Dental Prostheses: A Questionnaire-Based Cross-Sectional Study. Dent J (Basel) 2022; 10:dj10120227. [PMID: 36547043 PMCID: PMC9776968 DOI: 10.3390/dj10120227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 12/02/2022] Open
Abstract
Phonetics plays a major role in the fabrication of prostheses. This study aimed to assess the knowledge of students regarding the role of phonetics in denture fabrication and to improve the educational process and the clinical application. The study was conducted at the College of Dentistry, Imam Abdulrahman Bin Faisal University, and involved a survey of 344 dental students and interns. The questionnaire contained 20 questions and was divided into three sections: general knowledge, clinical correlations, and clinical evaluations. The data were collected and analyzed statistically using independent t-tests, one-way ANOVA, and Tukey’s post hoc tests. The response rate was 100%. Male and female students only differed significantly in terms of their scores for answers to general knowledge questions, with females achieving better results (p = 0.023). General knowledge varied significantly between fourth-year students and all other levels (p < 0.001), and fifth-year students and interns (p = 0.027). The clinical correlations varied significantly between fourth-year students and interns (p = 0.01), whereas the clinical evaluations varied between all the academic years and interns (fourth-year, p < 0.001; fifth-year, p = 0.003; and sixth-year, p = 0.017). The interns obtained the highest scores in all sections. There was a lack of awareness among dental students of some aspects of the role of phonetics in denture fabrication. The study highlights the deficiencies that need to be addressed and the need for adjustments to the curriculum related to removable prosthodontics in order to improve the knowledge of students regarding the role of speech in denture fabrication.
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Khattab TZ, Hajeer MY, Farah H. Evaluation of the C-lingual Retractor and the Conventional Lingual Orthodontic Brackets in Terms of Speech Performance and Oral Discomfort: A Randomized Controlled Trial. Cureus 2022; 14:e23752. [PMID: 35402116 PMCID: PMC8980254 DOI: 10.7759/cureus.23752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2022] [Indexed: 01/27/2023] Open
Abstract
Background The C-lingual retractor (CR) is an alternative lingual technique to retract anterior teeth with minimum torque expression loss. Although the effects of lingual braces upon speech and oral comfort have been studied previously, there is no published data about the C-lingual retractor in this aspect. The aims of this trial were to compare (1) speech performance based on objective acoustic analysis and (2) levels of oral impairment between C-lingual retractor and conventional lingual brackets (LBs). Materials and methods A parallel-group randomized controlled trial was conducted on patients with class II division 1 malocclusion who sought orthodontic treatment at the Department of Orthodontics, Hama University Dental School. Thirty-six patients who met inclusion criteria were randomly selected and divided into two groups. Eighteen patients in the C-lingual retractor group (CR group) were treated with a C-lingual retractor, whereas eighteen patients in the lingual brackets group (LB group) were treated with conventional lingual brackets (Stealth H, American Orthodontics, Sheboygan, WI, USA). Fricative /s/ sound spectrograms were analyzed before (T0), immediately after (T1), one month after (T2), and three months after appliance placement (T3). The levels of oral discomfort were assessed using standardized questionnaires to evaluate speech, irritation, chewing difficulties, and other oral impacts. Results At all assessment times, the C-lingual retractor caused significant deteriorations in articulation, whereas in the lingual brackets group these deteriorations were statistically significant at T1 and T2 (P<0.001) but not significant at T3 (P=0.073). No intergroup differences were detected. Questionnaire analysis revealed that irritation of the tongue was significantly higher in the lingual brackets group after 24 hours of appliances' placement (P=0.007), whereas speech and mastication problems were insignificantly higher in the C-lingual retractor group. Conclusions The findings indicate that the C-lingual retractor has insignificantly a little more interaction with sound production than lingual brackets. Although the levels of oral impacts were almost similar among both groups, more tongue irritation was observed in the lingual brackets group. However, the oral discomfort decreased over the observation period in both groups.
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Affiliation(s)
- Tarek Z Khattab
- Department of Orthodontics, Faculty of Dentistry, University of Hama, Hama, SYR
| | - Mohammad Y Hajeer
- Department of Orthodontics, Faculty of Dentistry, University of Damascus, Damascus, SYR
| | - Hassan Farah
- Department of Orthodontics, Faculty of Dentistry, University of Hama, Hama, SYR
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Yoshinaga T, Nozaki K, Kondo O, Iida A. Estimation of sibilant groove formation and sound generation from early hominin jawbones. JASA EXPRESS LETTERS 2022; 2:045203. [PMID: 36154226 DOI: 10.1121/10.0010209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The speech production capability of sibilant fricatives of early hominin was assessed by interpolating the modern human vocal tract to an Australopithecine specimen based on the jawbone landmarks, and then simulating the airflow and sound generation. The landmark interpolation demonstrates the possibility to form the sibilant groove in the anterior part of the oral tract, and results of the aeroacoustic simulation indicate that the early hominins had the potential to produce the fricative broadband noise with a constant supply of airflow to the oral cavity, although the ancestor's tongue deformation ability is still uncertain, and the results are highly speculative.
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Affiliation(s)
- Tsukasa Yoshinaga
- Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi 441-8580, Japan
| | - Kazunori Nozaki
- Division of Medical Information, Osaka University Dental Hospital, 1-8 Yamadaoka, Suita 565-0871, Japan
| | - Osamu Kondo
- Department of Biological Sciences. Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku. Tokyo, 113-0033, Japan , , ,
| | - Akiyoshi Iida
- Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi 441-8580, Japan
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Fraundorf EC, Araújo E, Ueno H, Schneider PP, Kim KB. Speech performance in adult patients undergoing Invisalign treatment. Angle Orthod 2022; 92:80-86. [PMID: 34415296 DOI: 10.2319/122820-1037.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 07/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To assess speech performance of adult patients undergoing orthodontic treatment with Invisalign. MATERIALS AND METHODS Twenty-four adult patients with Invisalign (Invisalign group: 6 men, 18 women; average age; 34.88 years) and 20 adult patients with fixed labial appliances (fixed group: 5 men, 15 women; average age; 38.85 years) were evaluated. Speech was recorded immediately before delivery of the first set of clear aligners or bonding of labial appliances (T0), immediately after delivery or bonding (T1), and 2 months after delivery or bonding (T2). Speech was evaluated via a combination of three auditory analyses: (1) objective acoustic analysis through digital sonography, (2) semiobjective assessment by six speech and language pathologists, and (3) subjective assessment patient questionnaire. RESULTS The objective acoustic analysis showed a statistically significant difference over time from T0 to T1, T1 to T2, and T0 to T2 for Invisalign patients. The semiobjective analysis revealed a significant speech alteration from T0 to T1 and T1 to T2 for both groups, and from T0 to T2 in the Invisalign group. The subjective analysis showed a significant difference between means of Invisalign and fixed group patient perception at both T1 and T2. CONCLUSIONS Invisalign treatment significantly affected speech, and although patients experience some level of adaptation, speech does not return to normal after 2 months of treatment.
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Wan J, Cai H, Wang T, Chen JY. Influence of pontic design of anterior fixed dental prosthesis on speech: A clinical case study. World J Clin Cases 2021; 9:11276-11284. [PMID: 35071558 PMCID: PMC8717503 DOI: 10.12998/wjcc.v9.i36.11276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/30/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The pontic design of fixed dental prostheses (FDPs) is strongly associated with the phonetic function, and the phonetic function of anterior FDPs with different pontic designs remains understudied.
AIM To investigate the immediate and short-term influence of pontic design of anterior FDPs on Chinese speech in a clinical case using objective acoustic analysis.
METHODS Two FDPs with two types of pontic design (saddle pontic and modified ridge lap pontic) were fabricated for one patient with maxillary anterior teeth missing. The acoustic analysis of patient’s articulation was conducted immediately after wearing the FDPs and 1 wk after wearing these FDPs.
RESULTS The effect of FDP on Chinese vowels (/a/, /o/, /e/, /i/, /u/, and /ü/) was insignificant, because the recovery of vowel distortion occurred within 1 wk for both FDPs. Three (/f/, /s/, and /sh/) of eight Chinese fricative consonants were found to have obvious distortions, and the /s/ sound distortion last for more than 1 wk for the patient wearing FDP with modified ridge lap pontic design.
CONCLUSION The influence of anterior FDP on articulation of Chinese vowels is insignificant, while the articulation of Chinese fricative consonants is more susceptible. When fabricating anterior FDPs for patients with speech related professions, saddle pontic design can be an alternative option compared with modified ridge lap pontic design.
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Affiliation(s)
- Jia Wan
- Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai 200433, China
| | - He Cai
- Department of Prosthodontics, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Tong Wang
- Department of Prosthodontics, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Jun-Yu Chen
- Department of Prosthodontics, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
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Lu H, Yoshinaga T, Li C, Nozaki K, Iida A, Tsubokura M. Numerical investigation of effects of incisor angle on production of sibilant /s/. Sci Rep 2021; 11:16720. [PMID: 34408209 PMCID: PMC8373871 DOI: 10.1038/s41598-021-96173-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/02/2021] [Indexed: 11/10/2022] Open
Abstract
The effects of the inclination angle of the incisor on the speech production of the fricative consonant /s/ was investigated using an implicit compressible flow solver. The hierarchical structure grid was applied to reduce the grid generation time for the vocal tract geometry. The airflow and sound during the pronunciation of /s/ were simulated using the adaptively switched time stepping scheme, and the angle of the incisor in the vocal tract was changed from normal position up to 30°. The results showed that increasing the incisor angle affected the flow configuration and moved the location of the high turbulence intensity region thereby decreased the amplitudes of the sound in the frequency range from 8 to 12 kHz. Performing the Fourier transform on the velocity fluctuation, we found that the position of large magnitudes of the velocity at 10 kHz shifted toward the lip outlet when the incisor angle was increased. In addition, separate acoustic simulations showed that the shift in the potential sound source position decreased the far-field sound amplitudes above 8 kHz. These results provide the underlying insights necessary to design dental prostheses for the production of sibilant fricatives.
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Affiliation(s)
- HsuehJui Lu
- Computational Fluid Dynamics Laboratory, Department of Computational Science, Graduate School of System Informatics, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501, Japan.,Complex Phenomena Unified Simulation Research Team, RIKEN, Advanced Institute for Computational Science, Kobe, 650-0047, Japan
| | - Tsukasa Yoshinaga
- Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan
| | - ChungGang Li
- Computational Fluid Dynamics Laboratory, Department of Computational Science, Graduate School of System Informatics, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501, Japan. .,Complex Phenomena Unified Simulation Research Team, RIKEN, Advanced Institute for Computational Science, Kobe, 650-0047, Japan.
| | - Kazunori Nozaki
- Osaka University Dental Hospital, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akiyoshi Iida
- Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan
| | - Makoto Tsubokura
- Computational Fluid Dynamics Laboratory, Department of Computational Science, Graduate School of System Informatics, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501, Japan.,Complex Phenomena Unified Simulation Research Team, RIKEN, Advanced Institute for Computational Science, Kobe, 650-0047, Japan
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Fonteyne E, Matthys C, Bruneel L, Becue L, De Bruyn H, Van Lierde K. Articulation, oral function, and quality of life in patients treated with implant overdentures in the mandible: A prospective study. Clin Implant Dent Relat Res 2021; 23:388-399. [PMID: 33615684 DOI: 10.1111/cid.12989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Modifications of facial and oral structures affect aesthetic appearance, orofacial functions, and have impact on quality of life. PURPOSE This study determined alterations of articulation, oromyofunctional behavior, and Oral Health Related Quality of Life (OHRQoL) in patients replacing complete removable dentures by implant retained overdentures in the mandible. MATERIALS AND METHODS Twenty-one fully edentulous patients received mandibular overdenture retained on a bar connecting two titanium dental implants. Patients were evaluated after receiving a new set of fully removable dentures (stage 1), after surgery during provisionalization on healing abutments (stage 2), and after final connection to the bar (stage 3). Assessments were taken by speech therapists and included evaluation of: articulation (picture naming and reading); oromyofunctional behavior; OHRQoL (OHIP-14 questionnaire), and overall satisfaction and speech (VAS). To measure changes over time, Wilcoxon matched-pairs signed-rank-test and McNemar test was used. RESULTS There was no significant impact of the treatment on speech nor on the results of oromyofunction. In stage 1, patients had different kinds of articulation errors (mean:1.21) which evolved to 0.71 and 0.67. In stage 3, especially problems with the /s/ sound are seen in 37% (7/19) of the participants. Results of OHRQoL and satisfaction reveal that the average of satisfaction with oral health evolved from 67% to 63% and finally 78%. OHIP-14 total score was 17.4/56 in stage 1, remained unchanged in stage 2 and evolved in stage 3 to 9.8/56 (P: .010). This indicates improvement. Satisfaction with speech evolved significantly from 68% pretreatment to 82% in stage 3 (P: .013). CONCLUSION Despite existing articulation and oromyofunctional disorders after treatment, people are very satisfied with their OHRQoL and their speech. Impact of mandibular denture wearing on OHRQoL declines once connected. It's important to inform patients that speech and oromyofunctional disorders may occur during treatment where especially the /s/ sound is vulnerable.
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Affiliation(s)
- Ester Fonteyne
- Faculty of Medicine and Health Sciences, Department of Oral Health Sciences, Section Periodontology and Oral Implantology, Ghent University, Ghent, Belgium.,Department of Dentistry, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Carine Matthys
- Faculty of Medicine and Health Sciences, Department of Oral Health Sciences, Clinic for Removable Prosthodontics, Ghent University, Ghent, Belgium
| | - Laura Bruneel
- Faculty of Medicine and Health Sciences, Department of Speech, Language, and Hearing Sciences, Ghent University, Ghent, Belgium
| | - Laurence Becue
- Faculty of Medicine and Health Sciences, Department of Oral Health Sciences, Section Periodontology and Oral Implantology, Ghent University, Ghent, Belgium
| | - Hugo De Bruyn
- Faculty of Medicine and Health Sciences, Department of Oral Health Sciences, Section Periodontology and Oral Implantology, Ghent University, Ghent, Belgium.,Department of Dentistry, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Kristiane Van Lierde
- Faculty of Medicine and Health Sciences, Department of Speech, Language, and Hearing Sciences, Ghent University, Ghent, Belgium.,Department of Communication, University of Pretoria, Pretoria, South Africa
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Hu S, Wan J, Duan L, Chen J. Influence of pontic design on speech with an anterior fixed dental prosthesis: A clinical study and finite element analysis. J Prosthet Dent 2020; 126:204.e1-204.e9. [PMID: 33280825 DOI: 10.1016/j.prosdent.2020.06.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 02/08/2023]
Abstract
STATEMENT OF PROBLEM Patients may experience disturbed articulation after treatment with a fixed dental prosthesis. However, studies that assess the relationship between fixed dental prosthesis design and the accuracy of speech sound production are lacking. PURPOSE The purpose of this clinical and finite element analysis (FEA) study was to examine the influence of pontic design on speech with anterior fixed dental prostheses. MATERIAL AND METHODS First, an articulation test was carried out in which a partially edentulous participant was required to pronounce 4 Chinese words containing the voiceless fricative/s/while wearing fixed dental prostheses with 2 types of pontic designs. The oral morphology was obtained by cone beam computed tomography (CBCT) scanning while the participant, wearing the 2 fixed dental prosthesis designs, was pronouncing the voiceless fricative/s/sound. The geometry of the oral cavity was then reconstructed by an image processing software program. Finally, a finite element model for sound wave propagation inside the oral cavity was developed within the framework of the finite element analysis software program. By using this model, the sound pressure level of the 2 types of pontic design was characterized and quantified under different fundamental frequencies (F0). The data were analyzed with 1-way ANOVA (α=.05). RESULTS The experimental articulation test reported that the pontic design of fixed dental prostheses affected the speech production of the/s/sound (P<.001). The numerical study reported that the sound pressure level values were different under various fundamental frequencies. In addition, the pontic design of fixed dental prostheses affected the sound pressure level values, and the differences varied significantly from 420 to 1300 Hz (P<.05); however, the differences were not significant between 120 and 420 Hz (P>.05). Moreover, further comparisons of low F0 (120 to 500 Hz), medium F0 (520 to 900 Hz), and high F0 (920 to 1300 Hz) reported that the differences in the medium F0 area were most obvious (P<.001 for maximum sound pressure level value and P=.001 for sound pressure level value at Point Q). CONCLUSIONS Both the fixed dental prosthesis pontic design and the fundamental frequency could affect the sound field distribution.
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Affiliation(s)
- Shanshan Hu
- Postdoctoral Research Fellow, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing, PR China
| | - Jia Wan
- PhD student, Phonetics Laboratory, University of Cambridge, Cambridge, UK
| | - Lunliang Duan
- PhD student, Department of Bridge Engineering, Southwest Jiaotong University, Chengdu, PR China
| | - Junyu Chen
- Associate research fellow, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
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Fonteyne E, Van Doorne L, Becue L, Matthys C, Bronckhorst E, De Bruyn H. Speech evaluation during maxillary mini-dental implant overdenture treatment: A prospective study. J Oral Rehabil 2019; 46:1151-1160. [PMID: 31271663 PMCID: PMC6899632 DOI: 10.1111/joor.12852] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/11/2019] [Accepted: 07/01/2019] [Indexed: 12/27/2022]
Abstract
Large proportions of patients are edentulous and wear removable dentures leading to reduced functional comfort and less oral health‐related quality of life. Satisfaction with the oral situation after implantation depends on the outcome in eating comfort, speech comfort and aesthetics. Modification in form and location of the teeth may affect speech. The aim of this study is to determine speech, oromyofunctional behaviour, satisfaction with the treatment and the impact on quality of life of the horse‐shoe overdenture retained by mini‐dental implants (MDIs) in the maxilla. This prospective multicentre cohort study included 32 patients for treatment. 5 to 6 implants were placed, traumatically piercing the mucosa. Patients were evaluated three times during treatment (pre‐operatively with conventional prosthesis including full palatal coverage (CD), post‐operatively with provisionally relined CD and with horse‐shoe overdenture on MDI). The assessment included a phonetic evaluation, examination of oromyofunctional behaviour, evaluation of the impact on quality of life (OHIP‐14) and a rating of satisfaction with the treatment and speech on a visual analogue scale. Several speech sounds are found to be disturbed before treatment. In the next two stages of the treatment, the number of speech issues decreases. In the final stage, ten people show minor speech problems, especially with the /s/ sound. In this stage, seven people still present with oromyofunctional problems, especially whistling problems. In this last stage, people are very satisfied with the treatment (83%) and with speech (84%). The impact on quality of life is low (8.23/56).
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Affiliation(s)
- Ester Fonteyne
- Department of Oral Health Sciences, Section Periodontology and Oral Implantology, Ghent University, Ghent, Belgium
| | - Luc Van Doorne
- Department of Oral Health Sciences, Section Maxillo-Facial Surgery, Periodontology and Oral Implantology, Ghent University, Ghent, Belgium
| | | | - Carine Matthys
- Clinic for Removable Prosthodontics, Faculty of Medicine and Health Sciences, Dental School, Ghent University, Ghent, Belgium
| | - Ewald Bronckhorst
- Department of Dentistry, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hugo De Bruyn
- Department of Dentistry, Periodontology Dental School Ghent, Radboud University Medical Center, Nijmegen, The Netherlands
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15
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Chen J, Wan J, You L. Speech and orthodontic appliances: a systematic literature review. Eur J Orthod 2018; 40:29-36. [PMID: 28472259 DOI: 10.1093/ejo/cjx023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Background Various types of orthodontic appliances can lead to speech difficulties. However, speech difficulties caused by orthodontic appliances have not been sufficiently investigated by an evidence-based method. Objectives The aim of this study is to outline the scientific evidence and mechanism of the speech difficulties caused by orthodontic appliances. Search methods and selection criteria Randomized-controlled clinical trials (RCT), controlled clinical trials, and cohort studies focusing on the effect of orthodontic appliances on speech were included. A systematic search was conducted by an electronic search in PubMed, EMBASE, and the Cochrane Library databases, complemented by a manual search. Data collection and analysis The types of orthodontic appliances, the affected sounds, and duration period of the speech disturbances were extracted. The ROBINS-I tool was applied to evaluate the quality of non-randomized studies, and the bias of RCT was assessed based on the Cochrane Handbook for Systematic Reviews of Interventions. No meta-analyses could be performed due to the heterogeneity in the study designs and treatment modalities. Results Among 448 screened articles, 13 studies were included (n = 297 patients). Different types of orthodontic appliances such as fixed appliances, orthodontic retainers and palatal expanders could influence the clarity of speech. The /i/, /a/, and /e/ vowels as well as /s/, /z/, /l/, /t/, /d/, /r/, and /ʃ/ consonants could be distorted by appliances. Although most speech impairments could return to normal within weeks, speech distortion of the /s/ sound might last for more than 3 months. The low evidence level grading and heterogeneity were the two main limitations in this systematic review. Conclusions Lingual fixed appliances, palatal expanders, and Hawley retainers have an evident influence on speech production. The /i/, /s/, /t/, and /d/ sounds are the primarily affected ones. The results of this systematic review should be interpreted with caution and more high-quality RCTs with larger sample sizes and longer follow-up periods are needed. Registration The protocol for this systematic review (CRD42017056573) was registered in the International Prospective Register of Systematic Reviews (PROSPERO).
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Affiliation(s)
- Junyu Chen
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jia Wan
- Department of Linguistics, Zhejiang University, Hangzhou, China
| | - Lun You
- Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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16
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Grimm DL, Stone M, Woo J, Lee J, Hwang JH, Bedrosian GE, Prince JL. The Effects of Palate Features and Glossectomy Surgery on /s/ Production. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2017; 60:3417-3425. [PMID: 29222537 PMCID: PMC6111526 DOI: 10.1044/2017_jslhr-s-16-0425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 05/03/2017] [Accepted: 08/05/2017] [Indexed: 06/07/2023]
Abstract
PURPOSE The aims of this article were to determine the effects of hard palate morphology and glossectomy surgery on tongue position and shape during /s/ for patients with small tumors. The first expectation was that laminal /s/ would be more prevalent in patients, than apical, due to reduced tongue tip control after surgery. The second was that patients would hold the tongue more anteriorly than controls to compensate for reduced tongue mass. METHOD Three-dimensional tongue volumes were calculated from magnetic resonance imaging for the whole tongue and the portion anterior to the first molar during the /s/ in /əsuk/ for 21 controls and 14 patients. These volumes were used to calculate tongue anteriority and cross-sectional shape. Dental casts were used to measure palate perimeter, height, and width of the hard palate. RESULTS Palate height correlated with tongue height in controls (p < .05), but not patients. In patients, tongue anteriority correlated negatively with canine width and cross-sectional tongue shape (p < .05). Controls with a high palate favored laminal /s/. Patients preferred laminal /s/ regardless of palate height (p < .01). CONCLUSIONS For controls, hard palate height affected tongue height; a higher palate yielded a higher tongue. For patients, hard palate width affected tongue width; a narrower palate yielded a more anterior tongue. Tongue shape was unaffected by any palate features. Preference for /s/ showed an interaction effect between subject and palate height. Controls with high palates preferred a laminal /s/. All patients preferred a laminal /s/; glossectomy surgery may reduce tongue tip control.
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Affiliation(s)
- Dana L. Grimm
- University of Maryland School of Dentistry, Baltimore
| | - Maureen Stone
- University of Maryland School of Dentistry, Baltimore
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Haj-Younis S, Khattab TZ, Hajeer MY, Farah H. A comparison between two lingual orthodontic brackets in terms of speech performance and patients' acceptance in correcting Class II, Division 1 malocclusion: a randomized controlled trial. Dental Press J Orthod 2017; 21:80-8. [PMID: 27653268 PMCID: PMC5029320 DOI: 10.1590/2177-6709.21.4.080-088.oar] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 03/29/2016] [Indexed: 05/29/2023] Open
Abstract
Objective: To compare speech performance and levels of oral impairment between two types of lingual brackets. Methods: A parallel-group randomized controlled trial was carried out on patients with Class II, Division 1 malocclusion treated at the University of Hama School of Dentistry in Hama, Syria. A total of 46 participants (mean age: 22.3 ± 2.3 years) with maxillary dentoalveolar protrusion were randomly distributed into two groups with 23 patients each (1:1 allocation ratio). Either STb (Ormco) or 7th Generation (Ormco) lingual brackets were applied. Fricative sound/s/ spectrograms were analyzed directly before intervention (T0), one week following premolar extraction prior to bracket placement (T1), within 24 hours of bracket bonding (T2), one month after (T3), and three months after (T4) bracket placement. Patients′ acceptance was assessed by means of standardized questionnaires. Results: After bracket placement, significant deterioration in articulation was recorded at all assessment times in the 7th Generation group, and up to T3 in the STb group. Significant intergroup differences were detected at T2 and T3. No statistically significant differences were found between the two groups in reported tongue irritation levels, whereas chewing difficulty was significantly higher in the 7th Generation group one month after bracket placement. Conclusions: 7th Generation brackets have more interaction with sound production than STb ones. Although patients in both groups complained of some degree of oral impairment, STb appliances appeared to be more comfortable than the 7th Generation ones, particularly within the first month of treatment.
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Affiliation(s)
- Samiha Haj-Younis
- Master's student, University of Hama, School of Dentistry, Orthodontic Department, Hama, Syria
| | - Tarek Z Khattab
- Clinical Lecturer and Demonstrator, University of Hama, School of Dentistry, Orthodontic Department, Hama, Syria
| | - Mohammad Y Hajeer
- Associate Professor, Damascus University, School of Dentistry, Orthodontic Department, Damascus, Syria
| | - Hassan Farah
- Associate Professor, University of Hama, Head of the Orthodontic Department, School of Dentistry, Hama, Syria
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Bulycheva EA, Trezubov VN, Alpateva UV, Bulycheva DS. Sound Production in Totally Edentulous Patients Before and After Prosthetic Treatment. J Prosthodont 2016; 27:528-534. [DOI: 10.1111/jopr.12535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2016] [Indexed: 11/27/2022] Open
Affiliation(s)
- Elena A. Bulycheva
- Orthopedic Dentistry and Material Science Department; Pavlov First State Saint Petersburg Medical University; Saint Petersburg Russia
| | - Vladimir N. Trezubov
- Orthopedic Dentistry and Material Science Department; Pavlov First State Saint Petersburg Medical University; Saint Petersburg Russia
| | - Ulia V. Alpateva
- Orthopedic Dentistry and Material Science Department; Pavlov First State Saint Petersburg Medical University; Saint Petersburg Russia
| | - Darya S. Bulycheva
- Orthopedic Dentistry and Material Science Department; Pavlov First State Saint Petersburg Medical University; Saint Petersburg Russia
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Hattori M, Sumita YI, Elbashti ME, Kurtz KS, Taniguchi H. Effect of Experimental Palatal Prosthesis on Voice Onset Time. J Prosthodont 2016; 27:223-226. [PMID: 27482952 DOI: 10.1111/jopr.12494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2016] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Objective evaluation of a patient's speech is needed in prosthetic dentistry because the prostheses can affect the intelligibility of speech. Measurement of voice onset time is one evaluation method of consonant production used in phonetic science. The purpose of this study was to confirm the influence of a palatal prosthesis on consonant production by measuring voice onset time. MATERIALS AND METHODS In this study, voice onset time was measured in 10 healthy women (mean age 26.5 years) under two conditions: with and without an experimental palatal prosthesis. In this study, voice onset time of /ta/ and /ka/ were used to determine the effect of wearing a palatal prosthesis; /pa/ was tested as a control, with the null hypothesis that voice onset time of /ta/ and /ka/ would not change when wearing a palatal prosthesis. RESULTS Medial voice onset time of /pa/, /ta/, and /ka/ syllables without the palatal prosthesis was 22.5 ms, 19.5 ms, and 42.5 ms, whereas that with the palatal prosthesis was 22.5 ms, 23.5 ms, and 55.0 ms. Voice onset times for /ta/ and /ka/ were prolonged when wearing the experimental palatal prosthesis, whereas /pa/ showed no significant difference. CONCLUSION Consonant production was affected by wearing a palatal prosthesis, and this change in sound was detected by measuring voice onset time.
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Affiliation(s)
- Mariko Hattori
- Clinic for Maxillofacial Prosthetics, University Hospital, Faculty of Dentistry Tokyo Medical and Dental University (TMDU), Bunkyo, Japan
| | - Yuka I Sumita
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Japan
| | - Mahmoud E Elbashti
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Japan
| | - Kenneth S Kurtz
- Division of Maxillofacial Prosthetics, Stony Brook University School of Dental Medicine, Stony Brook, NY
| | - Hisashi Taniguchi
- Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Japan
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20
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Fujiso Y, Nozaki K, Van Hirtum A. Estimation of minimum oral tract constriction area in sibilant fricatives from aerodynamic data. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2015; 138:EL20-EL25. [PMID: 26233055 DOI: 10.1121/1.4922366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Speech screening of sibilant fricative phonemes is an important tool for oral health care. Nevertheless, screening as a function of quantitative geometrical markers is mostly limited to teeth features whereas the minimum area of the narrowed air passage upstream from the tooth is known to be a key production feature. The minimum area is estimated from non-invasive aerodynamic measurements using a laminar flow model. The influence of viscid flow losses on the area estimation is shown to be negligible. Current data suggest that speech screening is most effective for phoneme /s/, which supports common practice in oral health care.
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Affiliation(s)
- Y Fujiso
- GIPSA-Lab, UMR CNRS 5216, Grenoble University, 11 rue des Mathématiques (BP46), 38402 Grenoble, France
| | - K Nozaki
- Osaka University Dental Hospital, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - A Van Hirtum
- GIPSA-Lab, UMR CNRS 5216, Grenoble University, 11 rue des Mathématiques (BP46), 38402 Grenoble, France
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21
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Wada J, Hideshima M, Inukai S, Matsuura H, Wakabayashi N. Influence of the width and cross-sectional shape of major connectors of maxillary dentures on the accuracy of speech production. Folia Phoniatr Logop 2015; 66:227-36. [PMID: 25659604 DOI: 10.1159/000369439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 10/28/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the effects of the width and cross-sectional shape of the major connectors of maxillary dentures located in the middle area of the palate on the accuracy of phonetic output of consonants using an originally developed speech recognition system. PATIENTS AND METHODS Nine adults (4 males and 5 females, aged 24-26 years) with sound dentition were recruited. The following six sounds were considered: [∫i], [t∫i], [ɾi], [ni], [çi], and [ki]. The experimental connectors were fabricated to simulate bars (narrow, 8-mm width) and plates (wide, 20-mm width). Two types of cross-sectional shapes in the sagittal plane were specified: flat and plump edge. The appearance ratio of phonetic segment labels was calculated with the speech recognition system to indicate the accuracy of phonetic output. Statistical analysis was conducted using one-way ANOVA and Tukey's test. RESULTS The mean appearance ratio of correct labels (MARC) significantly decreased for [ni] with the plump edge (narrow connector) and for [ki] with both the flat and plump edge (wide connectors). For [çi], the MARCs tended to be lower with flat plates. There were no significant differences for the other consonants. CONCLUSION The width and cross-sectional shape of the connectors had limited effects on the articulation of consonants at the palate.
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Affiliation(s)
- Junichiro Wada
- Section of Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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22
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Abstract
It is the responsibility of the dentist to fabricate a denture that is fully functional and perfectly esthetic. One prime oral function that has always been overlooked in this regard is speech. It has been thought that speech will follow mere replacement of teeth and that it is the patient's duty to fine tune this function with practice. Phonetics, esthetics, function and comfort form the foundation of a successful prosthodontic treatment. Accurate approximation of palatal contours of a maxillary complete denture to a patient's tongue can improve speech intelligibility, if other factors such as tooth position, occlusal plane and occlusal vertical dimension are satisfactory. Customizing palatal contours of a maxillary complete denture can be accomplished by using tissue-conditioning material, which provides sufficient working time for a patient to pronounce a series of sibilant sounds while recording dynamic impression of the tongue. This article describes a technique of obtaining palatogram and customizing palatal contours of a maxillary complete denture with autopolymerizing acrylic resin to improve the intelligibility of speech.
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Affiliation(s)
- Ashish R Jain
- Department of Prosthodontics, Tagore Dental College and Hospital, Chennai, Tamil Nadu, India
| | - M K Venkat Prasad
- Department of Prosthodontics, Saveetha University, Chennai, Tamil Nadu, India
| | - Padma Ariga
- Department of Prosthodontics, Saveetha University, Chennai, Tamil Nadu, India
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Khattab TZ, Farah H, Al-Sabbagh R, Hajeer MY, Haj-Hamed Y. Speech performance and oral impairments with lingual and labial orthodontic appliances in the first stage of fixed treatment. Angle Orthod 2013; 83:519-526. [PMID: 23075062 PMCID: PMC8763065 DOI: 10.2319/073112-619.1] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Accepted: 09/01/2012] [Indexed: 11/04/2023] Open
Abstract
OBJECTIVES To compare (1) speech performance based on an auditive analysis and sonagraphy and (2) levels of oral impairment between fixed lingual and labial orthodontic appliances. MATERIALS AND METHODS Thirty-four patients with Class I division 1 malocclusion and moderate crowding of upper teeth were distributed randomly into two groups. Seventeen patients in group A (mean age: 20.6 years; standard deviation [SD]: 2.9 years) were treated with fixed lingual appliances (Stealth®, AO, Sheboygan, Wisc), whereas 17 patients in group B (mean age: 21.8 years; SD: 3.3 years) were treated with conventional fixed labial appliances. Speech performance was tested using spectrographic analysis of fricative /s/ sound before, immediately after (T1), 1 month after, and 3 months after bracket placement. The levels of oral impairment were assessed using standardized questionnaires. RESULTS A significant deterioration in articulation was recorded at all assessment times in group A but only at T1 in group B. Significant intergroup differences were recorded at all assessment times (P < .001). Speech difficulties were significantly higher in the lingual brackets group after 1 month of bracket placement (P < .001). Soft tissue irritation and chewing difficulty were significantly higher in the lingual appliance group after 24 hours of bracket placement (P < .001). CONCLUSIONS The lingual appliance is more problematic than the labial one in terms of speech articulation. Although patients with both appliances suffered from different degrees of oral impairment, patients with lingual appliances had more untoward effects, particularly during the first month of treatment.
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Affiliation(s)
- Tarek Z. Khattab
- Clinical Lecturer and Demonstrator, Orthodontic Department, University of Al-Baath Dental School, Hamah, Syria
| | - Hassan Farah
- Associate Professor, Orthodontic Department, Vice-Dean for Scientific Affairs, University of Al-Baath Dental School, Hamah, Syria
| | - Rabab Al-Sabbagh
- Associate Professor, Orthodontic Department, Dean of the Dental School, University of Al-Baath, Hamah, Syria
| | - Mohammad Y. Hajeer
- Senior Lecturer and Head of the Orthodontic Department, University of Al-Baath Dental School, Hamah, Syria
| | - Yaser Haj-Hamed
- Private practice, Specialist in Lingual Orthodontics, working in Damascus (Syria), Abu Dhabi (UAE), and Riyadh (KSA)
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24
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Bonaventura P, Piecuch T, Oxley M, Iida J, Prahl J. Assessment of speech production with dentures by electromagnetic articulography. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2013:4710-4713. [PMID: 24110786 DOI: 10.1109/embc.2013.6610599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This report investigates the use of electromagnetic articulography (EMA) to compare basic speech patterns between a patient with traditional dentures to those of a normally dentate person. The goal is to assess the efficacy of traditional dentures in order to generate clinical data and works towards the improvement of denture design. Kinematic and acoustic data were acquired for these two subjects using a variety of repetitive vowel-consonant-vowel tasks. Spatiotemporal parameters indicating dynamic properties of the tongue blade and jaw movements, and timing coordination of the movements between them and with the output acoustic signal, were measured and compared within and between the participants. The results show significant differences in both spatial and temporal patterns and variation between individual tasks within each subject's data, as well as a difference in the two subjects' performance of the same task (cross-subject) for select calculated kinematic and latency parameters. It is concluded that there is more variation in spatiotemporal parameters in speech patterns for patients with dentures than without; in particular, latencies of the tongue blade and jaw movements and acoustic landmarks of the consonants, show strategies of movements timing coordination, typical of the speaker with denture.
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25
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Müller R, Höhlein A, Wolf A, Markwardt J, Schulz MC, Range U, Reitemeier B. Evaluation of Selected Speech Parameters after Prosthesis Supply in Patients with Maxillary or Mandibular Defects. ACTA ACUST UNITED AC 2013; 36:547-52. [DOI: 10.1159/000355154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Rosati R, De Menezes M, Rossetti A, Ferrario V, Sforza C. Three-dimensional analysis of dentolabial relationships: effect of age and sex in healthy dentition. Int J Oral Maxillofac Surg 2012; 41:1344-9. [DOI: 10.1016/j.ijom.2012.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 02/04/2012] [Accepted: 04/04/2012] [Indexed: 11/29/2022]
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Al-Magaleh WR, Swelem AA, Shohdi SS, Mawsouf NM. Setting up of teeth in the neutral zone and its effect on speech. Saudi Dent J 2012; 24:43-8. [PMID: 23960527 DOI: 10.1016/j.sdentj.2011.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 07/10/2011] [Accepted: 11/27/2011] [Indexed: 11/26/2022] Open
Abstract
Rational goals for denture construction are basically directed at the restoration of esthetics and masticatory function and the healthy preservation of the remaining natural tissues. Little concern has been given to the perfection and optimization of the phonetic quality of denture users. However, insertion of prosthodontic restorations may lead to speech defects. Most such defects are mild but, nevertheless, can be a source of concern to the patient. For the dental practitioner, there are few guidelines for designing a prosthetic restoration with maximum phonetic success. One of these guidelines involves the setting up of teeth within the neutral zone. The aim of this study was to evaluate, subjectively and objectively, the effect on speech of setting up teeth in the neutral zone. Three groups were examined: group I (control) included 10 completely dentulous subjects, group II included 10 completely edentulous patients with conventional dentures, and group III included the same 10 edentulous patients with neutral zone dentures. Subjective assessment included patient satisfaction. Objective assessment included duration taken for recitation of Al-Fateha and acoustic analysis. Subjectively, patients were more satisfied with their neutral zone dentures. Objectively, speech produced with the neutral zone dentures was closer to normal than speech with conventional dentures.
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Ellakwa A, McNamara K, Sandhu J, James K, Arora A, Klineberg I, El-Sheikh A, Martin FE. Quantifying the selection of maxillary anterior teeth using intraoral and extraoral anatomical landmarks. J Contemp Dent Pract 2011; 12:414-421. [PMID: 22269230 DOI: 10.5005/jp-journals-10024-1069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND One of the major hurdles in clinical prosthodontics has been the selection and replacement of maxillary anterior teeth in the absence of pre-extraction records. The aim of this study was to determine if a relationship exists between intraoral and extraoral facial measurements that could assist dental practitioners in selecting esthetically appropriate maxillary anterior teeth in the absence of pre-extraction records. MATERIALS AND METHODS A cross-sectional study design was used with a sample size of one hundred and twenty participants. A questionnaire was used to identify the selection criteria and a photograph was taken for facial measurements using digitally calibrated software. Ninety-eight participants met the selection criteria and were included in the study. Measurements of intraoral landmarks were taken from stone casts of maxillary impressions using calibrated digital calipers. Each measurement was completed by two assessors to obtain mean values. Data were statistically analyzed using SPSS version 17 software. Data were assessed by one way analysis of variance (ANOVA) followed by post hoc (p < 0.05) to find any difference between tested groups. Pearson coefficients were used to determine whether correlation exists between measurements. RESULTS The mean values for intraoral maxillary landmarks were: Central incisor width = 8.39 mm, circumferential canine tip to canine tip distance = 34.89 mm, arch width = 48.24 mm, left arch length = 45.24 mm, right arch length = 45.56 mm. The mean values for extraoral landmarks were: Intercanthal distance = 33.24 mm, interpupillary distance = 60.68 mm, interalar distance = 38.27 mm, intercommissure distance = 50.61 mm. Differences existed within subgroups for all intraoral and extraoral measures. A weak positive correlation existed between intraoral (r < 0.4) and extraoral measurements (r < 0.38) that remained consistent when examined by gender. CONCLUSION This study showed that the average length and width of the maxillary arch and interalar width were the anatomical landmarks that provided the strongest predictive relationship with anterior maxillary teeth (r = 0.38 - 0.4). Using these dimensions an average multiplying factor can be used to calculate maxillary incisor width or canine tip to canine tip distance. As the predictive strength is not strong, the authors recommend its use as a preliminary guide for determining the width of the maxillary anterior teeth during the initial selection of artificial teeth in the absence of pre-extraction records. CLINICAL SIGNIFICANCE The results of this study can be used to help dentists select the size of artificial maxillary anterior teeth in the absence of pre-extraction records.
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Affiliation(s)
- Ayman Ellakwa
- Department of Biomaterials, Faculty of Dentistry, The University of Sydney, Westmead Oral Health Centre Level, Westmead Hospital, Australia.
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Van Hirtum A, Pelorson X, Estienne O, Bailliet H. Experimental validation of flow models for a rigid vocal tract replica. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2011; 130:2128-2138. [PMID: 21973367 DOI: 10.1121/1.3631631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Flow through the vocal tract is studied through an in vitro rigid replica for different geometrical configurations and steady flow conditions with bulk Reynolds numbers Re<15,000. The vocal tract geometry is approximated by two consecutive obstacles, representing "tongue" and "tooth," in a rectangular channel of fixed length. For the upstream tongue obstacle with fixed constriction degree (81%) the streamwise position is varied and for the downstream obstacle the constriction degree is varied from 0% up to 96%. Different upstream pressures are considered for each geometrical configuration. Point pressure measurements at three fixed locations along the channel are experimentally assessed. In addition, the volume airflow rate is measured. The pressure distribution is estimated with a one-dimensional flow model, and the effects of different corrections to a laminar irrotational flow are assessed. The model outcome is validated against experimental data. Depending on the geometrical configuration, the best model accuracy is obtained by accounting for viscosity (needed for constriction degrees at the tooth that are small, i.e.,≤58%, or very large, i.e., ≥96%), a sudden constriction (large gap between both constrictions), or a bending geometry (narrow gap between both constrictions). Best overall model errors vary between 4% and 30% for all assessed geometrical configurations in cases where a tongue obstacle is present.
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Affiliation(s)
- Annemie Van Hirtum
- GIPSA-lab, UMR CNRS 5216, Grenoble University, F-38031 Grenoble Cedex 1, France.
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Wada J, Hideshima M, Inukai S, Ando T, Igarashi Y, Matsuura H. Influence of the major connector in a maxillary denture on phonetic function. J Prosthodont Res 2011; 55:234-42. [PMID: 21602116 DOI: 10.1016/j.jpor.2011.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 02/24/2011] [Accepted: 03/23/2011] [Indexed: 11/29/2022]
Abstract
PURPOSE The purpose of this study was to investigate the influence of the major connector in a maxillary denture. METHODS Eight patients with sound dentition were recruited in this study. The experimental connectors were fabricated with Co-Cr. Two positional designs were used: one was the middle type (M), and the other was the anterior and posterior type (AP). The six sounds, /shi/, /hi/, /chi/, /ki/, /ri/, and /ni/, were chosen as the test sounds. Using a speech recognition system, the intelligibility, change and duration of the test sounds were evaluated under three conditions: without connector (WO·C), with the M-type connector (W·M), and with the AP-type connector (W·AP). RESULTS The intelligibility in WO·C and W·AP was 86.9 ± 17.4% and 57.1 ± 30.1% for /shi/, 79.2 ± 19.7% and 70.5 ± 27.0% for /hi/, 74.7 ± 14.6% and 43.6 ± 24.3% for /chi/, 54.4 ± 16.5% and 23.2 ± 17.8% for /ki/, 85.2 ± 15.9% and 55.1 ± 30.6% for /ri/, and 76.9 ± 26.9% and 50.2 ± 31.3% for /ni/. Significant differences were recognized between WO·C and W·AP in /shi/, /chi/, /ki/ and /ri/(P<0.01). The intelligibility in W·M was higher than that in W·AP in all test sounds. As for incorrect labels, significant differences were recognized in the appearance ratio of /hi/ as the incorrect label in the test sound /shi/ (P<0.05). There were significant differences in some incorrect labels of /hi/ and /chi/. As for duration of consonant part, there was no significant difference in each test sound. CONCLUSION It was indicated that the middle type of the major connector would be recommended from a viewpoint of phonetic function.
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Affiliation(s)
- Junichiro Wada
- Removable Partial Denture Prosthodontics, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School of Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
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Bereteu L, Drăgănescu GE, Stănescu D, Sinescu C. Quantitative measurement of speech sound distortions with the aid of minimum variance spectral estimation method for dentistry use. Comput Methods Biomech Biomed Engin 2011; 14:1097-104. [PMID: 21442488 DOI: 10.1080/10255842.2010.512866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this paper, we search an adequate quantitative method based on minimum variance spectral analysis in order to reflect the dependence of the speech quality on the correct positioning of the dental prostheses. We also search some quantitative parameters, which reflect the correct position of dental prostheses in a sensitive manner.
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Affiliation(s)
- L Bereteu
- Department of Mechanics, Center of Biomedical Engineering, Polytechnic University of Timişoara, Romania.
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Cruz JPP, de Oliveira RN, Braid ACM. Phonetic damage related to unilateral functional inhibition of the lingual nerve. J Oral Maxillofac Surg 2011; 69:1764-70. [PMID: 21256647 DOI: 10.1016/j.joms.2010.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 07/12/2010] [Accepted: 07/22/2010] [Indexed: 11/16/2022]
Abstract
PURPOSE The aim of this study was to analyze the effects of unilateral functional inhibition of the lingual nerve in phonetic function by perceptual and acoustic analyses of speech, which was recorded before and after neurosensory modification of the lingual nerve, and a comparison of results of these evaluations with a subject's self-perception. PATIENTS AND METHODS The sample consisted of 10 volunteers who had the lingual nerve of the right side anesthetized. The analyzed recordings consisted of terms directly dependent on the tongue for production. In the perceptual analysis, pitch and loudness behaviors were observed, in addition to coarticulation and intelligibility. The acoustic analysis of 5 vowels and sibilant /s/ was realized. A questionnaire about the discomfort level in speech production was applied. RESULTS Perceptual/auditive and acoustic parameters showed no significant differences. Although 3 informants declared some kind of discomfort related to speech production, they presented no acoustic or perceptual modification in sound quality. CONCLUSIONS Although inhibition of sensory function of the lingual nerve generated considerable annoyance, there was no specific damage to phonetic function in the group under study, because no differences were observed in the quality of the speech of subjects after applying anesthesia to the lingual nerve.
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Rodrigues LCB, Pegoraro LF, Brasolotto AG, Berretin-Felix G, Genaro KF. A fala nas diferentes modalidades de reabilitação oral protética em idosos. ACTA ACUST UNITED AC 2010; 22:151-7. [DOI: 10.1590/s0104-56872010000200014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Accepted: 04/22/2010] [Indexed: 11/21/2022]
Abstract
TEMA: a produção da fala nas modalidades de reabilitação oral protética. OBJETIVO: verificar se o tipo de reabilitação oral interfere na produção da fala. MÉTODO: 36 idosos (média = 68 anos), divididos em 3 grupos, foram avaliados: 13 com dentes naturais (A), 13 com prótese total mucosossuportada superior e inferior (B) e 10 com prótese total mucosossuportada superior e implantossuportada inferior (C). A estabilidade das próteses foi avaliada por um dentista e amostras de fala foram analisadas por 5 fonoaudiólogos. Para determinar a freqüência de alteração dos sons da fala utilizou-se o cálculo da Porcentagem de Consoantes Corretas (PCC). RESULTADOS: observou-se poucos casos com alteração de fala, com maior freqüência no grupo C (23,08%), sendo a articulação travada presente em todos os grupos, a redução dos movimentos labiais em dois grupos (A e B) e a articulação exagerada e a falta de controle salivar em um dos grupos (C e B). Quanto à PCC, menor valor foi observado para os fones linguodentais nos grupos B e C (maior ocorrência de alteração), seguido dos fones alveolares, predominando casos sem alteração no grupo A, contrariamente aos demais grupos, sendo a projeção lingual e o ceceio as alterações mais encontradas. Não houve diferença entre os grupos e a maioria do grupo B estava com a prótese inferior insatisfatória, não havendo associação entre alteração de fala e prótese insatisfatória. CONCLUSÃO: apesar da amostra pequena, indivíduos reabilitados com prótese total apresentam alteração nos fones linguodentais e alveolares e o tipo de prótese, bem como a estabilidade desta parece não interferir na produção da fala.
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Goiato MC, Filho HG, dos Santos DM, Barão VAR, Júnior ACF. Insertion and follow-up of complete dentures: a literature review. Gerodontology 2010; 28:197-204. [DOI: 10.1111/j.1741-2358.2010.00368.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Villanueva P, Morán D, Loreto Lizana M, Palomino HM. Articulación de fones en individuos clase esqueletal I,II y III. REVISTA CEFAC 2009. [DOI: 10.1590/s1516-18462009000300009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJETIVO: determinar los patrones de articulación de fones consonánticos en sujetos de habla española chilena clases I, II y III esqueletal; comparar las diferencias fonéticas que existan entre clases esqueletales. MÉTODOS: se seleccionaron 54 individuos que cumplían con los criterios de inclusión determinados mediante un examen clínico intraoral y a través del análisis de Ricketts, y se conformaron los grupos de estudio de pacientes clases esqueletales I, II y III. Se les realizó un examen fonoarticulatorio estandarizado para determinar los fones modificados y el patrón articulatorio compensatorio realizado. RESULTADOS: se observaron cambios en el punto de articulación de fones consonánticos en las tres clases esqueletales, con diferencias significativas en los grupos de fones anteriores y medios entre pacientes clases I y II, sólo en el grupo de los fones anteriores entre pacientes I y III. Entre pacientes clases II y III no se observaron diferencias significativas. Se reportan modificaciones y compensaciones cualitativamente distintas entre las clases esqueletales. CONCLUSIONES: en relación a pacientes clase I, los pacientes clase II o III, presentan distinto grado de modificación en el punto de articulación de fones consonánticos. Las diferencias observadas se relacionan con los patrones esqueletales propios de cada clase.
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Kong HJ, Hansen CA. Customizing palatal contours of a denture to improve speech intelligibility. J Prosthet Dent 2008; 99:243-8. [PMID: 18319096 DOI: 10.1016/s0022-3913(08)60049-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Accurate approximation of palatal contours of a maxillary complete denture to a patient's tongue can improve speech intelligibility, if other factors such as tooth position, occlusal plane, and occlusal vertical dimension are satisfactory. Customizing palatal contours of a maxillary complete denture can be accomplished by using tissue-conditioning material, which provides sufficient working time for a patient to pronounce a series of sibilant sounds while recording dynamic impression of the tongue. This article describes a technique for customizing palatal contours of a maxillary complete denture with autopolymerizing acrylic resin to improve speech intelligibility.
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Affiliation(s)
- Hyung-Jun Kong
- Department of Restorative Dentistry, Southern Illinois University, Alton, IL 62002, USA.
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Villanueva P, Loreto Lizana M, Huber H, Morán D, Fernández MA, Palomino HM. Modificaciones en la articulación de fones en pacientes con aparato ortodóncico fijo lingual. REVISTA CEFAC 2007. [DOI: 10.1590/s1516-18462007000400008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJETIVO: el presente trabajo pretende evaluar el efecto de los aparatos ortodóncicos fijos linguales en la articulación de los fones, en pacientes que hablen español chileno, y la adaptación a estos efectos dentro del primer mes de uso de los aparatos. MÉTODOS: la muestra consistió en 13 pacientes que acudieron para instalación de aparato ortodóncico fijo lingual. Se realizó un examen fonoarticulatorio en condiciones estandarizadas, en 5 momentos diferentes: previo a la instalación de los aparatos fijos (E0), inmediatamente después de realizada esta (E1), a las 24 horas posteriores (E2), a los 7 días (E3) y un mes después de la instalación (E4). Se determinaron los fones afectados en los distintos momentos de examen respecto a la línea base dada por el examen previo, y se analizó su resolución. RESULTADOS: se observaron cambios significativos en el punto de articulación de los fones [d], [s] y [r] Los fones [d] y [s] mostraron una resolución favorable dentro del primer mes de uso de los aparatos. El fone vibrante múltiple [r] no mostró una recuperación de la alteración una vez cumplido un mes de uso de los aparatos ortodóncicos. CONCLUSIONES: la instalación de aparato ortodóncico fijo lingual produce modificaciones en el punto de articulación de los fones consonánticos, las cuales tienden a mejorar dentro del primer mes de uso de los aparatos, con excepción del fone vibrante múltiple [r].
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Panek H, Krawczykowska H, Dobosz A, Napadłek P, Panek BA, Sosna-Gramza M. Follow-up visits as a measure of adaptation process to removable prostheses. Gerodontology 2006; 23:87-92. [PMID: 16677181 DOI: 10.1111/j.1741-2358.2006.00091.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The paper was aimed to establish the influence of some general and local factors on adaptation process to removable prostheses (RPs). The adaptation process is a complex issue, which is often associated with painful reactions. Those complaints force patients to visit a dentist who makes alterations to reduce the patient's discomfort. MATERIAL AND METHODS The study involved analysis of 300 dental records of patients who visited our Department for RPs. The authors analysed the influence of gender, age, condition of general health, maintenance of the prosthetic base tissues and the kind of prostheses on the process of adaptation. It was measured by means of a number of follow-up visits of the patients to our polyclinic. The findings were analysed statistically by means of chi-squared test. The level of significance was assumed to be p < 0.05. RESULTS AND CONCLUSIONS Adaptation to RPs without any correction was revealed by about one-fifth of patients. Men adapted to RPs better than women. The biggest problems with adaptation to RPs were observed in patients using a complete and partial prosthesis simultaneously. The number of follow-up visits by patients who were treated with RPs for the first time or had been treated before was almost the same. Adaptation of RPs on an atrophic muco-osseous ridge was associated with more multiple visits than in the case of a well-preserved ridge. Healthy patients adapt to RPs better than patients with systemic disorders. Taking into account the limitations of the study, the number of follow-up visits may be used as a helpful indicator of the adaptation process.
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Affiliation(s)
- Halina Panek
- Department of Prosthodontics, Wrocław Medical University, Wrocław, Poland.
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Drăgănescu GE, Sinescu C, Dodenciu D. Quantitative measurement of speech sound distortions due to inadequate dental mounting. Comput Methods Biomech Biomed Engin 2006; 9:25-34. [PMID: 16880154 DOI: 10.1080/10255840600557508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In this paper, the most adequate quantitative parameters are sought that reflect the dependence of speech sound distortions on the correct position of dental mountings. We suggest the Hurst fractal exponent and some parameters calculated from the Paul wavelet transform of speech sound are useful as quantitative parameters. The investigations are focussed on the alterations of the first /s/ phoneme when the patient produces the Sisyphe sound. The results will be useful to obtain a rigorous, computer assisted method to establish (design) the optimal parameters of prosthetic mounts in order to ensure best speech quality.
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Affiliation(s)
- G E Drăgănescu
- Department of Mechanics and Vibrations, Polytechnic University of Timişoara, Romania.
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Souza RFD, Compagnoni MA, Leles CR, Sadalla KBDF. Association between the speaking space of /s/ sound and incisal overlaps in dentate and edentate subjects. J Appl Oral Sci 2005; 13:413-7. [DOI: 10.1590/s1678-77572005000400018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2004] [Accepted: 09/13/2005] [Indexed: 01/04/2023] Open
Abstract
The purpose of this study is to determine the association of speaking space of /s/ sound with vertical and horizontal overlaps for two subject groups. Group I comprised 61 subjects with complete permanent dentition and Group II comprised 33 complete denture wearers. They had their mandibular movement determined by using an electromagnetic method. Speaking space of /s/ was obtained from each subject as they were instructed to say the word 'seis' three times. The mean interocclusal distance during /s/ production was considered the speaking space of /s/. Vertical and horizontal incisor overlaps were also measured. The mean value of speaking space of /s/ was 2.22 mm (± 1.38) for Group I and 2.61 mm (± 1.53) for Group II. In Group I, significant correlations were found between the speaking space of /s/ and vertical overlap (r=0.36, P<0.01), and between speaking space of /s/ and horizontal overlap (r=0.45, P<0.01). In Group II, no significant correlation was found between speaking space of /s/ and the overlaps. It was concluded that incisor overlap had a direct influence on the measure of speaking space of /s/ for dentate subjects, but this association was not present for complete denture wearers.
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Marino VCC, Williams WN, Wharton PW, Paulk MF, Dutka-Souza JCR, Schulz GM. Immediate and sustained changes in tongue movement with an experimental palatal "fistula": a case study. Cleft Palate Craniofac J 2005; 42:286-96. [PMID: 15865464 DOI: 10.1597/03-048.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To determine the immediate and longer-term effect(s) on tongue movement following the placement of an experimental opening through a palatal obturator (replicate of subject's prosthesis) worn by an adult male with an unrepaired cleft of the hard and soft palate. METHODS Tongue movements associated with an anterior experimental opening of 20 mm(2) were examined under three conditions: a control condition in which the subject wore the experimental obturator completely occluded, a condition immediately after drilling the experimental openings through the obturator, and a condition after 5 days in which the subject wore the experimental obturator with the experimental opening. An Electromagnetic Articulograph was used for obtaining tongue movements during speech. RESULTS The findings partly revealed that the immediate introduction of a perturbation to the speech system (experimental fistula) had a temporary effect on tongue movement. After sustained perturbation (for 5 days), the system normalized (going back toward control condition's behavior). Perceptual data were consistent with kinematic tongue movement direction in most of the cases. CONCLUSIONS Although the immediate response can be interpreted as indicative of the subject's attempts to move the tongue toward the opening to compensate for air loss, the findings following a sustained perturbation indicate that with time, other physiological adjustments (such as respiratory adjustments, for example) may help reestablish the requirements of a pressure-regulating system.
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Affiliation(s)
- Viviane C C Marino
- Phonoaudiology Department, State University of São Paulo-UNESP, Campus Marília, Brazil.
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Honová J, Jindra P, Pesák J. Analysis of articulation of fricative praealveolar sibilant "S" in control population. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2003; 147:239-42. [PMID: 15037911 DOI: 10.5507/bp.2003.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Defective pronunciation of one or more mother language phones, i.e. dyslalia, represents the most frequent speech impairment both in children and adult people. Cases of persisting speech disorder need professional approach and help. The aim of the study was to obtain a model of physiological articulation of the sibilant "s" in children. The method of FFT spectral analysis was made use of. Results will serve for further use in evaluation of speech impairment.
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Affiliation(s)
- Jaroslava Honová
- Department of Journalism, Philosophical Faculty, Palacký University, Krízkovského 10, 771 80 Olomouc, Czech Republic.
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Hohoff A, Stamm T, Goder G, Sauerland C, Ehmer U, Seifert E. Comparison of 3 bonded lingual appliances by auditive analysis and subjective assessment. Am J Orthod Dentofacial Orthop 2003; 124:737-45. [PMID: 14666090 DOI: 10.1016/j.ajodo.2003.08.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The aim of this prospective study was to compare for the first time the influences of lingual appliances of different dimensions on sound performance and oral comfort. The study group comprised 12 subjects (10 women, 2 men; mean age, 33.96 years). Their sound production was recorded by means of a digital audio tape recorder before, 10 minutes after, and 24 hours after placement of the different appliances for semiobjective assessment by 3 blinded speech professionals. This was followed by supplementary subjective ratings of sound performance and oral comfort by the patients. All lingual appliances induced significant impairment in sound performance and oral comfort. However, they varied significantly with respect to the degree of impairment. The smaller the appliance, the less pronounced the impairments it induced. The smallest changes were induced by a bonded canine-to-canine retainer, followed by customized lingual brackets and prefabricated lingual brackets. By using lower-profile customized brackets, the orthodontist can significantly enhance patient comfort and significantly reduce impairments of sound performance in comparison with prefabricated brackets with larger dimensions. Before placing a lingual appliance, however, patients should be briefed on possible effects such as impaired sound production and decreased oral comfort.
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Affiliation(s)
- Ariane Hohoff
- Department of Orthodontics, Muenster University Hospital, Westphalian Wilhelms-University, Waldeyerstrasse 30, D-48129 Muenster, Germany.
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Hohoff A, Seifert E, Fillion D, Stamm T, Heinecke A, Ehmer U. Speech performance in lingual orthodontic patients measured by sonagraphy and auditive analysis. Am J Orthod Dentofacial Orthop 2003; 123:146-52. [PMID: 12594420 DOI: 10.1067/mod.2003.12] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Esthetically appealing, externally invisible, lingually applied orthodontic brackets are in increasing demand. Because the brackets are placed lingually, however, they appear to cause some problems with respect to speech. This study is the first to present a prospective evaluation of the articulation of 23 patients with lingual brackets by means of an innovative combination of test methods. An acoustic, objective evaluation of articulation measured by digital sonagraphy was related to a semiobjective auditive evaluation by 10 speech professionals, to a semiobjective auditive evaluation by close contacts of the patients, and to a subjective auditive evaluation by the patients themselves, the latter 2 using standardized questionnaires. The tests were performed before (T1), within 24 hours after (T2), and 3 months (+/- 1 week) after (T3) the start of therapy. In comparison with the initial findings, a significant deterioration in articulation was recorded with all test methods at T2 and T3. Using a new combination of methods, our investigations show the need for detailed briefing of patients about the extent and duration of changes in speech resulting from lingual brackets.
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Affiliation(s)
- Ariane Hohoff
- Department of Orthodontics, Muenster University Hospital, Westphalian Wilhelms-University, Waldeyerstrasse 30, D-48129 Muenster, Germany.
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Jindra P, Eber M, Pesák J. The spectral analysis of syllables in patients using dentures. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2002; 146:91-4. [PMID: 12572905 DOI: 10.5507/bp.2002.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Changes in the oral cavity resulting from the loss of teeth and the ensuing reconstruction of a set of teeth by dentures (partial or complete) may cause changes in the speech and voice of the patient. The aim of the present investigation was to study the changes in speech and voice in patients suffering from teeth loss and the degree of speech improvement using dentures. Voice and speech parameters of a set of tested syllables were analysed in 10 patients at the 2nd Clinic of Stomatology. The analysis was carried out by means of an FFT, SoundForge 5.0 programme. Differently expressed acoustic changes in both consonants and vowels were ascertained in a percentage of the patients under examination. These concerned especially the sibilant ("s", "(see text)"), labiodental ("f", "v") and vibrating ("r", "(see text)") consonants. Changes in the FFT spectrum and air leakage in constrictive consonants were also found. In some patients the vowels, especially the closed ones ("i", "u"), may change their fundamental frequency and show noise admixture manifested as a blurred delimitation of the formants. A denture should, inter alia, render it possible for the patient to produce the same articulation to which he/she had been accustomed before the loss of teeth. For the construction of dentures the most important factors from a phonetic point of view appear to be the following: overbite, overjet, the height of the plate, the thickness of the palatal material, the incisor position, and the modelling of the ruga palatina on the hard palate. In case of wrong denture construction the acoustic changes may continue, resulting in the patient's stress load dependent upon sex, age, psychic condition and seriousness of the problem.
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Affiliation(s)
- Petr Jindra
- 2nd Clinic of Stomatology, Faculty of Medicine, Palacký University, Palackeho 12 77200, Olomouc, Czech Republic.
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