Analysis of morphological changes in the soft tissue following orthognathic surgery in patients with severe (over 10 mm) facial asymmetry

IF 2 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Stomatology Oral and Maxillofacial Surgery Pub Date : 2025-10-01 DOI:10.1016/j.jormas.2025.102480

Chiho Moon , Changmo Sohn , Dae-Seok Hwang

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Abstract

This study aims to compare the quantitative differences in soft tissue changes among patients who underwent orthognathic surgery for facial asymmetry correction. A total of 24 patients treated between January 2015 and December 2022 were included. Data were collected at four time points: T0 (preoperative), T1 (3 days postoperatively), T2 (6 months postoperatively), and T3 (12 months postoperatively). Facial asymmetry was defined as a menton deviation of ≥10 mm from the midsagittal plane, with all patients undergoing maxillary canting correction during surgery.

Soft tissue changes were assessed using five anatomical landmarks: malar prominence (MP), alar curvature point (Ac), soft tissue gonion (Go), mid-ramus (mR), and cheilion (Ch). No sex-related differences were observed. Comparison between T2 and T3 revealed that four out of 24 patients (16.6 %) exhibited statistically significant differences. T3 demonstrated the lowest asymmetry index and the greatest soft tissue changes from T0. The deviated side exhibited the most pronounced changes, with cheilion showing the highest degree of symmetry improvement.

These findings provide insight into the morphological adaptations of soft tissue following orthognathic surgery and may assist in predicting postoperative outcomes.

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严重（超过10毫米）面部不对称患者正颌手术后软组织形态学变化分析。

本研究旨在比较正颌手术矫正面部不对称患者软组织变化的定量差异。共纳入2015年1月至2022年12月期间接受治疗的24例患者。收集数据的时间点为：T0（术前）、T1（术后3天）、T2（术后6个月）和T3（术后12个月）。面部不对称定义为下颌偏离中矢状面≥10mm，所有患者均在手术中进行上颌倾斜矫正。使用五个解剖标志评估软组织变化：颧突（MP），鼻翼曲率点（Ac），软组织阴离子（Go），中支（mR）和cheilion （Ch）。没有观察到性别相关的差异。T2与T3比较，24例患者中有4例（16.6%）差异有统计学意义。T3不对称指数最低，软组织变化最大。偏侧的变化最为明显，cheilion的对称性改善程度最高。这些发现提供了对正颌手术后软组织形态适应的见解，并可能有助于预测术后结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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