Case Report
Copyright ©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Mar 6, 2020; 8(5): 971-979
Published online Mar 6, 2020. doi: 10.12998/wjcc.v8.i5.971
Two bone blocks sandwich technique for horizontal reconstruction of severely atrophic alveolar ridge in anterior maxilla: A case report
Hai-Bin Xia, Yu-Feng Zhang, Bin Shi, Min Wang
Hai-Bin Xia, Yu-Feng Zhang, Bin Shi, Min Wang, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei Province, China
Yu-Feng Zhang, Min Wang, The State Key Laboratory Breeding Base of Basic Science of Stomatology, Hubei Province and Key Laboratory of Oral Biomedicine (Wuhan University), Ministry of Education (Hubei-MOST and KLOBM), Wuhan 430079, Hubei Province, China
Author contributions: Xia HB, Shi B and Wang M contributed to the case report design; Xia HB collected the data; Wang M contributed to the manuscript drafting; Zhang YF supervised the report and the publication process; all authors issued final approval for the version to be submitted.
Informed consent statement: Informed written consent was obtained from the patient for the publication of the report and accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflicts of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Min Wang, DDS, PhD, Associate Chief Physician, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, Hubei Province, China. 83wangmin@whu.edu.cn
Received: November 13, 2019
Peer-review started: November 13, 2019
First decision: January 19, 2020
Revised: February 6, 2020
Accepted: February 12, 2020
Article in press: February 12, 2020
Published online: March 6, 2020
Abstract
BACKGROUND

Severe horizontal bone deficiency of the maxillary anterior region is considered a major challenge in reconstruction and successful implant placement. Various approaches have been developed to augment bone volume. Of these approaches, onlay bone graft, alveolar bone splitting, and guided bone regeneration have been suggested.

CASE SUMMARY

A 22-year-old female patient, with no previous medical history, presented to the Department of Oral Implantology, Wuhan University due to a missing right maxillary incisor. The X-ray results showed severe horizontal bone deficiency, with an available bone width of 3.1-4.0 mm. The two bone blocks sandwich technique was performed to augment the bone volume. After 6 months healing, X-ray results showed that the newly formed alveolar ridge dimension increased to 4.7-9.5 mm horizontally. Implant insertion surgery was performed and all-ceramic restorations were fabricated. The implant was stable at the 1-year follow-up visit after restoration, and the X-ray showed a stable bone level around the dental implant. The scores for the pink esthetic score and white esthetic score were 12 and 8, respectively, and the patient was satisfied with the esthetic outcome.

CONCLUSION

The two bone blocks sandwich technique may be an alternative treatment option in augmenting severe horizontal bone deficiency of the anterior maxilla.

Keywords: Horizontal bone resorption, Onlay bone graft, Sandwich, Dental implant, Esthetic, Case report

Core tip: The two bone blocks sandwich technique refers to two autogenous bone blocks harvested from alveolar bone in the maxillary anterior edentulous region, and includes one small bone block and one large bone block. The small bone block is harvested from the apical zone of the large bone block, and it is sandwiched between the large bone block and the palatal bone plate. This technique may be an alternative treatment option in augmenting severe horizontal bone deficiency of the anterior maxilla.