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Introduction <p>In Asia, a square face, which is characterized by prominent mandibular angles or masseter hypertrophy, is considered less aesthetic and masculine by Oriental populations, including Vietnamese. A combination of any two procedures of mandibular ostectomy, outer cortex grinding or ostectomy, and masseter muscle resection was widely presented. In this article, we presented a single-stage procedure combining angle-body-chin curved ostectomy, corticectomy, and/or masseter muscle resection based on four classifications of mandibular angles, which brought satisfactory results in the Vietnamese population.</p> Methods <p>From January 2021 to February 2023, all cases (n = 31) that underwent facial contouring surgery only for aesthetic purposes in our clinic were included in the study. The majority of patients underwent a combination of curved ostectomy, corticectomy, and masseter muscle resection to achieve optimal results. Pre- and postoperative mandibular angles (ArGoMe), the distance between two bilateral angles (G–G), and the distance between soft tissue parts of two bilateral angles (G′–G′) measured by cephalometry were recorded.</p> Results <p>The ArGoMe angle significantly increased from 114.3°&#xa0;±&#xa0;3.1 to 128.7°&#xa0;±&#xa0;5.0 (<i>p</i>&#xa0;&lt;&#xa0;0.0001). The G–G distance and G′–G′ distance statistically decreased from 97.6&#xa0;±&#xa0;6.6 to 86.2&#xa0;±&#xa0;4.0&#xa0;mm (<i>p</i>&#xa0;&lt;&#xa0;0.0001) and from 120.7&#xa0;±&#xa0;7.2 to 111.0&#xa0;±&#xa0;7.2&#xa0;mm (<i>p</i>&#xa0;&lt;&#xa0;0.0001). 94% of patients expressed their satisfaction with the results. No severe complications were noted.</p> Conclusions <p>The combination of curved mandibular ostectomy–corticectomy–masseter resection brought satisfactory results to patients with a square face and idiopathic masseter hypertrophy in both frontal and lateral views. This approach was suitable for patients with a prominent mandibular angle and masseter hypertrophy, which might be widely present in the Vietnamese population and other populations with similar anatomic characteristics.</p> Level of Evidence III <p>This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors <a href="http://www.springer.com/00266">www.springer.com/00266</a>.</p>

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A Single-Stage Surgery of Mandibular Angle Ostectomy and Corticectomy Combined with Masseter Muscle Resection for Facial Contouring in the Vietnamese Population

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Tuan Hoang Thanh,
  • Luat Nguyen Van,
  • Ai Luu Dang,
  • Toan Pham Sy,
  • Vinh Vu Quang,
  • Anh Tran Van

摘要

Introduction

In Asia, a square face, which is characterized by prominent mandibular angles or masseter hypertrophy, is considered less aesthetic and masculine by Oriental populations, including Vietnamese. A combination of any two procedures of mandibular ostectomy, outer cortex grinding or ostectomy, and masseter muscle resection was widely presented. In this article, we presented a single-stage procedure combining angle-body-chin curved ostectomy, corticectomy, and/or masseter muscle resection based on four classifications of mandibular angles, which brought satisfactory results in the Vietnamese population.

Methods

From January 2021 to February 2023, all cases (n = 31) that underwent facial contouring surgery only for aesthetic purposes in our clinic were included in the study. The majority of patients underwent a combination of curved ostectomy, corticectomy, and masseter muscle resection to achieve optimal results. Pre- and postoperative mandibular angles (ArGoMe), the distance between two bilateral angles (G–G), and the distance between soft tissue parts of two bilateral angles (G′–G′) measured by cephalometry were recorded.

Results

The ArGoMe angle significantly increased from 114.3° ± 3.1 to 128.7° ± 5.0 (p < 0.0001). The G–G distance and G′–G′ distance statistically decreased from 97.6 ± 6.6 to 86.2 ± 4.0 mm (p < 0.0001) and from 120.7 ± 7.2 to 111.0 ± 7.2 mm (p < 0.0001). 94% of patients expressed their satisfaction with the results. No severe complications were noted.

Conclusions

The combination of curved mandibular ostectomy–corticectomy–masseter resection brought satisfactory results to patients with a square face and idiopathic masseter hypertrophy in both frontal and lateral views. This approach was suitable for patients with a prominent mandibular angle and masseter hypertrophy, which might be widely present in the Vietnamese population and other populations with similar anatomic characteristics.

Level of Evidence III

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.