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Mautsch C, Klenke J, Kern T, Wolfart S, Kern JS. Electroplated double-crowns on implants and teeth after up to 12 years- a retrospective clinical study. Int J Implant Dent 2025; 11:9. [PMID: 39899219 PMCID: PMC11790550 DOI: 10.1186/s40729-025-00594-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2024] [Accepted: 01/09/2025] [Indexed: 02/04/2025] Open
Abstract
PURPOSE To retrospectively evaluate the outcome of implant-supported or combined tooth-implant-supported prostheses retained by electroplated double-crowns after 1-12 years. METHODS Twenty-five patients were retrospectively examined in a private dental practice in Hamburg, Germany. All had been rehabilitated with a removable prosthesis retained by electroplated double-crowns, for at least one year. Fifteen patients had implant-supported prostheses and 10 had combined tooth-implant-supported prostheses in the maxilla or the mandible. Biological and technical complications were recorded at the clinical examination and extracted from the patient records. Kaplan-Meier implant and tooth survival rates were calculated. Potential risk factors for severe complications were identified. Oral health-related quality of life (OHRQoL) was measured by a short version of the Oral Health Impact Profile (OHIP) questionnaire. Patients reported subjective chewing function using a visual analogue scale. RESULTS Kaplan-Meier survival rates were 100% for natural abutments and 90.9% for implants after 11.8 years (p = 0.54). Two implants in two patients were lost at 8 and 9 years due to peri-implantitis in the "solely implant" group. The most common complications were decementation of primary crowns and wear of the prosthetic teeth. The mean OHIP score for the group "tooth-implant-supported" was 5.2 ± 5.0, whereas the mean score for the "solely implant" group was 1.7 ± 2.9 (p = 0.039). Patients rated their subjective masticatory function very high with an average score of 9.4 ± 0.8 out of a possible 10. CONCLUSIONS Implant-supported or combined tooth-implant-supported prostheses retained by electroplated double-crowns are a viable method of treatment with a satisfactory outcome. Maintenance has been manageable and patients have reported very good subjective chewing function after several years of function.
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Affiliation(s)
- Christoph Mautsch
- Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Jan Klenke
- Private Dental Practice, Große Bleichen 32, 20354, Hamburg, Germany
| | - Thomas Kern
- Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Stefan Wolfart
- Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Jaana-Sophia Kern
- Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.
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Kopzon V, Raedel M. Outcomes of abutment teeth with double crowns over an observation period of 27 years. J Prosthodont Res 2023; 67:518-523. [PMID: 36529501 DOI: 10.2186/jpr.jpr_d_22_00165] [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: 10/17/2023]
Abstract
PURPOSE The aim of this retrospective study was to determine the outcome of double crowns (DCs) using pooled data over a period of 27 years. METHODS Billing data were obtained from the digital accounting system of a university dental clinic. All DCs inserted and invoiced from January 1, 1992, to December 31, 2019, were collected. The maximum observation period of a DC was determined by a recorded follow-up or the occurrence of a target event. Target events were divided into primary, i.e., tooth extraction, and secondary, i.e., failure of DC, types. The dataset was analyzed using descriptive statistics and Kaplan-Meier survival and multivariate Cox regression analyses. RESULTS A total of 4,097 tooth-supported DCs in 1,148 patients were included in the analysis. The mean observation period for individual DC was 5.32 years. The cumulative survival rates at 5 and 10 years for the primary target event were 89.7% and 73.8%, respectively. The cumulative survival rates at 5 and 10 years for the secondary target event were 83.6% and 60.6%, respectively. In the multivariate analysis, age and metal denture bases were significantly associated with both target events. CONCLUSIONS This study confirmed DCs as a reliable and long-term successful treatment option for anchoring removable partial dentures. The use of a metal denture base and a younger patient age might reduce the risk of complications.
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Affiliation(s)
- Vadim Kopzon
- Department of Prosthetic Dentistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Michael Raedel
- Department of Prosthetic Dentistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Prosthodontic Rehabilitation of Patients with Double Crown and Locator Attachment - Retained Overdentures Supported by a Combination of Natural Tooth and Strategic Implants: Case Series. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2022. [DOI: 10.2478/sjecr-2019-0038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Prosthetic rehabilitation of edentulous patients and patients with one or two own teeth can be established by different treatment modalities. The most commonly used in the treatment of these patients is conventional complete denture or removable partial denture. However, due to increasing problems with this type of therapy, such as insufficient retention, stability, comfort and pain during mastication, it is suggested an overdenture supported by two natural teeth or implants. We will present series of clinical reports. In two clinical cases patients came to the dental office because of the impossibility of wearing lower partial denture, and in one case patient had problems with the upper partial denture. After clinical examination and radigraphic analysis, in all patients, dental implants were implanted. In first case there were implanted two dental implants in the region 41 and 43, in second case it was region 33, and in third case implanatiton is performed in the region of 14, 11, 21. Prosthetic rehabilitation was done after 3-months bone oseointegration period. The treatment consisted in the production of double crowns and overdentures that are retained with locator attachment. This design of the denture significantly improves the quality of patient’s life (the dentures are stable, chewing is improved, the feeling of thermal sensations of food and drink is present, the feeling of taste is complete, and the psychological patient becomes safer).
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Molinero-Mourelle P, Bischof F, Yilmaz B, Schimmel M, Abou-Ayash S. Clinical performance of tooth implant-supported removable partial dentures: a systematic review and meta-analysis. Clin Oral Investig 2022; 26:6003-6014. [PMID: 35840738 PMCID: PMC9525404 DOI: 10.1007/s00784-022-04622-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/08/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To assess the clinical performance of tooth implant-supported removable partial dentures in terms of abutment survival in relation to the attachment system used. METHODS An electronic search in MEDLINE/PubMed Web of Science and Cochrane Central Register of Controlled Trials databases was performed. The methodological quality of the studies was assessed using the Newcastle-Ottawa Scale. Survival rates after 3 years and 5 years, loss, and complication rates per 100 years were estimated by Poisson regression. RESULTS A total of twelve studies were included; eleven studies were used for the meta-analysis. Survival analysis for mixed attachments showed an estimated survival rate of 100% after 3 years and 5 years. For uniform attachments, the estimated survival rate was 99.3% after 3 years and 98.8% after 5 years. Tooth abutment survival analysis for mixed attachments estimated a survival rate of 95% after 3 years and 91.7% after 5 years: Uniform attachments reached a survival rate of 97.2% after 3 years and 95.4% after 5 years. The prosthetic survival rate was 100% for mixed and uniform abutments after 3 years and 5 years of function. CONCLUSIONS Tooth implant-supported removable partial dentures can be considered as a reliable option with excellent prosthetic and implant survival rates and favorable rates for the abutments after 3-year and 5-year follow-ups. Complications may be reduced when 5 or more abutments are used. CLINICAL RELEVANCE Tooth implant-supported removable partial dentures are a favorable and potential alternative to restore a partially edentulous arch by optimizing the number and distribution of abutments.
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Affiliation(s)
- Pedro Molinero-Mourelle
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, 3010, Switzerland
| | - Frank Bischof
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, 3010, Switzerland
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, 3010, Switzerland
- Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA
| | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, 3010, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, 3010, Switzerland.
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Seo JG, Cho JH. Clinical outcomes of rigid and non-rigid telescopic double-crown-retained removable dental prostheses: An analytical review. J Adv Prosthodont 2020; 12:38-48. [PMID: 32128085 PMCID: PMC7040448 DOI: 10.4047/jap.2020.12.1.38] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 01/30/2020] [Accepted: 02/12/2020] [Indexed: 12/28/2022] Open
Abstract
PURPOSE The objective of this literature review was to analyze the cumulative survival rates (CSRs) of rigid and non-rigid double-crown-retained removable dental prostheses. MATERIALS AND METHODS Screening of the literature published from January 1995 to December 2019 was performed by using electronic data base (Pubmed) and manual search. The CSRs of rigid and non-rigid double crown removable dental prostheses were investigated. RESULTS A total of 403 articles were reviewed and 56 relevant articles of them were selected. Subsequently, 25 articles were included for data extraction. These articles were classified according to rigid and non-rigid type double crowns and further subdivided into teeth, implants, and teeth-implant combination types. The CSRs of rigid type double crown ranged from 68.9% to 95.1% of 5 to 10 years in tooth abutments, 94.02% to 100% over a 3-year mean observation periods in implant abutments, and 81.8% to 97.6% in tooth-implant combination. Non-rigid type double crowns had various CSR ranges from 34% to 94% maximum during 10 years observation in teeth abutment. The CSRs of non-rigid type had over 98% in implant abutments, and ranged from 85% to 100% in tooth-implant combination. CONCLUSION The CSRs of double crowns varies according to types. With accurate evaluation of the remaining teeth and plan of the strategic implant placement, it could be successful treatment alternatives for partially or completely edentulous patients.
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Affiliation(s)
- Jeong-Gyo Seo
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Jin-Hyun Cho
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
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Fobbe H, Rammelsberg P, Lorenzo Bermejo J, Kappel S. The up-to-11-year survival and success of implants and abutment teeth under solely implant-supported and combined tooth-implant-supported double crown-retained removable dentures. Clin Oral Implants Res 2019; 30:1134-1141. [PMID: 31444828 DOI: 10.1111/clr.13527] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 08/11/2019] [Accepted: 08/12/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This retrospective analysis was designed to compare the survival and success of dental implants in solely implant-supported, double crown-retained removable dentures (DCRDs) and combined tooth-implant-supported DCRDs, due to a lack of data on the latter. MATERIAL AND METHODS From 2002, patients were consecutively admitted for treatment at the Department of Prosthodontics, University of Heidelberg. Surgical and prosthodontic treatment and scheduled and unscheduled visits were recorded on standardized documentation forms. Kaplan-Meier analysis was used to estimate success (survival without major complications). Cox regression was applied to assess risk factors. RESULTS From this clinical study, 139 DCRDs on 412 implants and 239 teeth met the inclusion criteria. Fifty-three dentures were implant-supported (213 implants). Eighty-six were supported by teeth and implants. The DCRDs were placed in 126 patients. After an observation period of up to 11.2 years (median: 4.2 years), total implant survival was 99.5% for tooth-implant-supported DCRDs and 93.4% for implant-supported ones. The estimated cumulative success was 97.2% (standard error/SE ± 1.2%) and 85.9% (SE ± 2.4%) at five years, respectively. Complications included implant or tooth loss, peri-implantitis, apical periodontitis and tooth fracture. In terms of abutments, results from multiple Cox regression revealed lower failure rates in tooth-implant-supported dentures (p = .04). No other risk factors were identified. CONCLUSIONS Within the limitations of this study, survival and success are high for both treatment options. Combining teeth and implants in one DCRD might have a positive effect on the prognosis of the implant and the survival of remaining teeth.
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Affiliation(s)
- Hannah Fobbe
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany
| | - Peter Rammelsberg
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany
| | - Justo Lorenzo Bermejo
- Institute of Medical Biometry and Informatics, University Hospital Heidelberg, Heidelberg, Germany
| | - Stefanie Kappel
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany
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Doornewaard R, Christiaens V, De Bruyn H, Jacobsson M, Cosyn J, Vervaeke S, Jacquet W. Long-Term Effect of Surface Roughness and Patients' Factors on Crestal Bone Loss at Dental Implants. A Systematic Review and Meta-Analysis. Clin Implant Dent Relat Res 2016; 19:372-399. [PMID: 27860171 DOI: 10.1111/cid.12457] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Publications from 2011 to 2015 were selected to evaluate effect of implant surface roughness on long-term bone loss as surrogate for peri-implantitis risk. 87 out of 2,566 papers reported the mean bone loss after at least 5 years of function. Estimation of the proportion of implants with bone loss above 1, 2, and 3 mm as well as analysis the effect of implant surface roughness, smoking, and history of periodontitis was performed. By means of the provided statistical information of bone loss (mean and standard deviation) the prevalence of implants with bone loss ranging from 1 to 3 mm was estimated. The bone loss was used as a surrogate parameter for "peri-implantitis" given the fact that "peri-implantitis" prevalence was not reported in most studies or when reported, the diagnostic criteria were unclear or of dubious quality. The outcome of this review suggests that peri-implant bone loss around minimally rough implant systems was statistically significant less in comparison to the moderately rough and rough implant systems. No statistically significant difference was observed between moderately rough and rough implant systems. The studies that compared implants with comparable design and different surface roughness, showed less average peri-implant bone loss around the less rough surfaces in the meta-analysis. However, due to the heterogeneity of the papers and the multifactorial cause for bone loss, the impact of surface roughness alone seems rather limited and of minimal clinical importance. Irrespective of surface topography or implant brand, the average weighted implant survival rate was 97.3% after 5 years or more of loading. If considering 3 mm bone loss after at least 5 years to represent the presence of "peri-implantitis," less than 5% of the implants were affected. The meta-analysis indicated that periodontal history and smoking habits yielded more bone loss.
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Affiliation(s)
- Ron Doornewaard
- Specialist in training, Master student Periodontology, Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium
| | - Véronique Christiaens
- PhD student, Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium
| | - Hugo De Bruyn
- full professor and chairman, Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, visiting professor, Department of Prosthodontics, Malmö University, Sweden
| | - Magnus Jacobsson
- adjunct professor, Department of Prosthodontics, Malmö University, Sweden
| | - Jan Cosyn
- professor, Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium, professor, Faculty of Medicine and Health Sciences, Oral Health Research Group ORHE, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Stijn Vervaeke
- assistant professor, Department Periodontology & Oral Implantology, Dental School, Faculty Medicine and Health Sciences, Ghent University Belgium
| | - Wolfgang Jacquet
- professor, Faculty of Medicine and Pharmacy, Department of Educational Sciences EDWE-LOCI, Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium, professor, Faculty of Medicine and Health Sciences, Oral Health Research Group ORHE, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
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Mundt T, Al Jaghsi A, Schwahn B, Hilgert J, Lucas C, Biffar R, Schwahn C, Heinemann F. Immediate versus delayed loading of strategic mini dental implants for the stabilization of partial removable dental prostheses: a patient cluster randomized, parallel-group 3-year trial. BMC Oral Health 2016; 17:30. [PMID: 27473256 PMCID: PMC4967347 DOI: 10.1186/s12903-016-0259-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 07/23/2016] [Indexed: 11/29/2022] Open
Abstract
Background Acceptable short-term survival rates (>90 %) of mini-implants (diameter < 3.0 mm) are only documented for mandibular overdentures. Sound data for mini-implants as strategic abutments for a better retention of partial removable dental prosthesis (PRDP) are not available. Methods/design The purpose of this study is to test the hypothesis that immediately loaded mini-implants show more bone loss and less success than strategic mini-implants with delayed loading. In this four-center (one university hospital, three dental practices in Germany), parallel-group, controlled clinical trial, which is cluster randomized on patient level, a total of 80 partially edentulous patients with unfavourable number and distribution of remaining abutment teeth in at least one jaw will receive supplementary min-implants to stabilize their PRDP. The mini-implant are either immediately loaded after implant placement (test group) or delayed after four months (control group). Follow-up of the patients will be performed for 36 months. The primary outcome is the radiographic bone level changes at implants. The secondary outcome is the implant success as a composite variable. Tertiary outcomes include clinical, subjective (quality of life, satisfaction, chewing ability) and dental or technical complications. Discussion Strategic implants under an existing PRDP are only documented for standard-diameter implants. Mini-implants could be a minimal invasive and low cost solution for this treatment modality. Trial registration The trial is registered at Deutsches Register Klinischer Studien (German register of clinical trials) under DRKS-ID: DRKS00007589 (www.germanctr.de) on January 13th, 2015. Electronic supplementary material The online version of this article (doi:10.1186/s12903-016-0259-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Torsten Mundt
- Department of Prosthodontics, Greifswald University Hospital, Gerodontology and Dental Materials, Greifswald, Germany.
| | - Ahmad Al Jaghsi
- Department of Prosthodontics, Greifswald University Hospital, Gerodontology and Dental Materials, Greifswald, Germany
| | | | | | - Christian Lucas
- Department of Oral and Maxillofacial Surgery/Plastic Surgery, Greifswald University Hospital, Greifswald, Germany
| | - Reiner Biffar
- Department of Prosthodontics, Greifswald University Hospital, Gerodontology and Dental Materials, Greifswald, Germany
| | - Christian Schwahn
- Department of Prosthodontics, Greifswald University Hospital, Gerodontology and Dental Materials, Greifswald, Germany
| | - Friedhelm Heinemann
- Department of Prosthodontics, Gerodontology and Dental Materials, Private Practice, Morsbach-Lichtenberg, Germany and Greifswald University Hospital, Greifswald, Germany
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