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ORIGINAL RESEARCH article

Front. Surg.
Sec. Reconstructive and Plastic Surgery
Volume 11 - 2024 | doi: 10.3389/fsurg.2024.1391231
This article is part of the Research Topic Personalized Surgery of the Face View all 4 articles

Correcting Facial Asymmetry through Guided Plate Assisted Mandibular Angle Osteotomy

Provisionally accepted
Wenqing Han Wenqing Han 1*ZHANG YICHI ZHANG YICHI 2Byeong Seop Kim Byeong Seop Kim 2Mengzhe Sun Mengzhe Sun 2Gang Chai Gang Chai 2*
  • 1 Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
  • 2 Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China

The final, formatted version of the article will be published soon.

    BACKGROUND Asian women prefer a smooth and narrowed mandibular appearance. The purpose of the retrospective cohort study is to evaluate guide plate-assisted mandibular angle ostectomy (MAO) in improving mandiblular symmetry for Asian female patients with mandibular angle hypertrophy (MAH) with normal occlusal relationship.We retrospectively examined 11 patients with asymmetry MAH with normal occlusal relationship who received MAO at Shanghai Ninth People's Hospital between September, 2020, and January, 2022. Preoperative plans were designed based on CT data and executed using metal guide plate during the operation. Preoperative and one-week postoperative CT scans were used to assess measurements including Height_Go, Divergence_Go, ∠ZyZy-GoGo, and osteotomy volume, to evaluate symmetry. For precision, compare the postoperative CT with the preoperative design, assessing osteotomy distance, angle, and volume error. Patient satisfaication was evaluated with Likert Scale in 6-month follow-up. Secondary lipofilling procedures were given as appropriate. Statistical analysis was performed using paired t-tests in SPSS.The mean age of the 11 patients was 28.5 years (range 23-34 years). 2 of these underwent lipofilling procedures. No complications were observed during the following-up.Postoperative results were not statistically different from the design , demonstrating a precision of within 2mm. Height_Go disparity within 5mm get corrected notablly, reducing asymmetry from 15.09% preoperatively to 2.74% postoperatively. Patients satisfaction was rated at 4.5 out of 5 in 6 month follow-up.Conclusions Guide plate-assisted mandibular angle osteotomies achieve effective and precise surgery. This approach demonstrates a safe option for correction for mandibular asymmetry, achieving patient satisfaction.

    Keywords: Mandible, Osteotomy, computer-assisted surgery, Patient Satisfaction, Facial Asymmetry

    Received: 25 Feb 2024; Accepted: 22 Jul 2024.

    Copyright: © 2024 Han, YICHI, Kim, Sun and Chai. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Wenqing Han, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
    Gang Chai, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China

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