Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada.
Department of Communication Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Canada.
Comput Methods Biomech Biomed Engin. 2021 Aug;24(11):1212-1220. doi: 10.1080/10255842.2020.1870965. Epub 2021 Jan 16.
The current study proposes a 3D objective method of evaluating facial symmetry after reconstructive surgery of orofacial structures. 3D models of the craniofacial and soft tissue surfaces were reflected about the mid-sagittal plane. The original model was aligned with the reflection and the best plane of symmetry was found. A deviation contour map quantified the areas of asymmetry and gave a global score of the asymmetry. The asymmetry scores were successfully obtained for 18 patients who had underwent reconstruction of lower face. The asymmetry values at craniofacial and soft tissue levels were moderately correlated (=0.39). Overall, the developed method effectively highlights areas of asymmetry and can help evaluate aesthetic outcomes of facial reconstruction surgery.
本研究提出了一种 3D 客观评价口面结构重建术后面部对称性的方法。对颅面和软组织表面的 3D 模型进行正中矢状面反射，使原始模型与反射模型对齐，并找到最佳对称平面。偏差轮廓图定量评估了不对称区域，并给出了整体不对称评分。该方法成功地应用于 18 例接受下面部重建的患者。颅面和软组织水平的不对称值呈中度相关（=0.39）。总的来说，该方法能有效突出不对称区域，有助于对面部重建手术的美学效果进行评估。
