State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Orthognathic & TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Orthognathic & TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Suzhou Stomatological Hospital, China.
J Plast Reconstr Aesthet Surg. 2023 Aug;83:42-50. doi: 10.1016/j.bjps.2023.04.060. Epub 2023 Apr 21.
Reduction malarplasty is one of the most popular procedures for esthetic facial contouring in East Asians. The retrospective observational study aimed to analyze the association between the zygomatic change and bone setback or resection to propose quantitative guidance for L-shaped reduction malarplasty based on computed tomographic (CT) images.
A retrospective observational study was conducted on patients who underwent L-shaped reduction malarplasty with bone resection (Group I) or without bone resection (Group II). The amount of bone setback and resection was calculated. The unilateral width changes of the anterior, middle, and posterior zygomatic regions as well as zygomatic protrusion change were also evaluated. Pearson correlation analysis and linear regression analysis were used to analyze the relationship between the bone setback or resection and the zygomatic changes.
Eighty patients who underwent L-shaped reduction malarplasty were included in this study. Significant correlation was observed between the bone setback or resection and the change of anterior, and middle zygomatic width as well as protrusion in both the two groups (P < .001). The correlation between bone setback or resection and the posterior zygomatic width change was not significant (P ＞.05).
The bone setback or resection of L-shaped reduction malarplasty lead to the anterior and middle zygomatic width and zygomatic protrusion changes. Furthermore, the linear regression equation can be referenced as a guidance for a preoperative surgical plan.
颧骨缩小术是东亚人进行面部美学轮廓整形的最受欢迎的手术之一。本回顾性观察研究旨在分析颧骨变化与骨后退或切除之间的关系，以便根据计算机断层扫描（CT）图像为 L 形颧骨缩小术提出定量指导。
对接受 L 形颧骨缩小术伴骨切除（I 组）或不伴骨切除（II 组）的患者进行回顾性观察性研究。计算骨后退和切除的量。还评估了前、中、后颧骨区域的单侧宽度变化以及颧骨突出变化。采用 Pearson 相关分析和线性回归分析来分析骨后退或切除与颧骨变化之间的关系。
本研究纳入了 80 例行 L 形颧骨缩小术的患者。两组患者的骨后退或切除与前、中颧骨宽度以及突出变化均呈显著相关（P<0.001）。骨后退或切除与后颧骨宽度变化之间无显著相关性（P>.05）。
L 形颧骨缩小术的骨后退或切除导致前、中颧骨宽度和颧骨突出变化。此外，线性回归方程可作为术前手术计划的参考。
