Three-Dimensional Geometric Morphometry of Facial Soft Tissue Changes After Bilateral Sagittal Split Ramus Osteotomy
Three-Dimensional Geometric Morphometry of Facial Soft Tissue Changes After Bilateral Sagittal Split Ramus Osteotomy
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DOI：
10.1097/scs.0000000000008228
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发表时间：
2022-01-01
影响因子：
0.9
通讯作者：
Mori, Yoshihide
中科院分区：
文献类型：
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作者：
Al Bougha, Safieh;Nakano, Hiroyuki;Mori, Yoshihide
本研究旨在评估几何形态测量学（GM）评估正颌手术后面部软组织变化的性能。受试者为27名接受双侧下颌升支矢状劈开截骨术的患者（骨骼III类），27名志愿者作为对照组。在术前（T0）和术后6个月（T1）获得每例患者的计算机断层扫描图像。作为对照组，还获得了27名志愿者（骨骼I类）的计算机断层扫描图像。使用三维（3D）建模软件，创建3D模型并将其导出到3D表面分析软件中进行几何形态测量和主成分（PC）分析。15例PC中第1、2组面部软组织差异有统计学意义。第一个PC代表下面部高度的变化，第二个PC代表下巴前后位置的变化。比较手术前后的图像，他们说明下面部高度降低，下巴和下唇向后移动。几何形态测量显示是一个成功的工具，以隔离手术相关的变化，从个体间的形态变化。
This study aimed to evaluate the performance of geometric morphometry (GM) to assess the changes in facial soft tissue after orthognathic surgery. Subjects were 27 patients (skeletal class III) who underwent bilateral sagittal split ramus osteotomy and 27 volunteers as a control group. Computed tomography images of each patient were obtained before surgery (T0) and 6 months after surgery (T1). Computed tomography images of 27 volunteers (skeletal class I) were also obtained as a control group. Using a three-dimensional (3D) modeling software, 3D models were created and exported to a 3D surface analyzing software for geometric morphometry and principal component (PC) analysis. Significant differences in facial soft tissue were found in the first and second of 15 PC. The first PC represented variation in the lower facial height, and the second PC represented variation in the anterior-posterior position of the chin. Comparing the pre- and post-operative images, they illustrated that lower facial height was decreased, and the chin and lower lip moved posteriorly. Geometric morphometry showed to be a successful tool to isolate surgeryrelated changes from interindividual morphological variations.