The aim of this study is to evaluate whether the three-dimensional (3D) morphology of the mandibular condyle, glenoid fossa, and mandible correlated with menton deviation in facial asymmetry. Thirty adults (15 males and 15 females; mean age, 23.2 ± 3.8 years) with facial asymmetry were included. Linear, angular, and volumetric measurements of the 3D morphology of the mandibular condyle, glenoid fossa, and mandible were recorded using computed tomography (CT) images. The right/left differences were obtained by subtracting the left value from the right value, and an independent t test was used to compare the differences between the females and males. Multiple regression analysis was performed to identify the correlation between the right/left difference of the 3D morphology and menton deviation. The results of the comparative analysis did not show any statistical difference between the females and males (P > .05), so the females and males were combined. Multiple regression analysis for the mandibular condyle, glenoid fossa, and mandible showed that neck length, ramus length, and frontal ramal inclination had positive influences on menton deviation, with 76.5% of explanatory power. The neck length and head volume of the mandibular condyle when only the mandibular condyle was considered, and the ramus length and frontal ramal inclination when only the mandible was considered had positive influence on menton deviation with 69.9% and 68.6% explanatory power, respectively. On the other hand, when only considering glenoid fossa, the glenoid fossa had little effect on menton deviation with 15.7% of explanatory power. In facial asymmetry, the right/left differences in mandibular condyle and mandible have more impact on the menton deviation than the right/left differences in glenoid fossa. CNUDH, CNUDH-EXP-2017-016 . Registered 28 September 2017

中文翻译：

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下颌骨和盂盂窝的三维形态是面部不对称性回顾性研究中导致芒通偏离的因素。

本研究的目的是评估下颌con突，关节盂窝和下颌骨的三维（3D）形态是否与面部不对称的芒通偏差相关。包括三十名面部不对称的成年人（男15例，女15例；平均年龄23.2±3.8岁）。使用计算机断层扫描（CT）图像记录下颌con，盂关节窝和下颌骨的3D形态的线性，角度和体积测量值。通过从右值减去左值获得右/左差异，并使用独立的t检验比较雌性和雄性之间的差异。进行了多元回归分析，以确定3D形态的左右差异与芒通偏差之间的相关性。比较分析的结果没有显示出女性与男性之间的任何统计学差异（P> .05），因此女性与男性相结合。对下颌con突，关节盂窝和下颌骨进行的多元回归分析表明，颈部长度，横突长度和额骨倾斜度对芒通偏移有积极影响，解释力为76.5％。仅考虑下颌con时，下颌con的颈部长度和头部体积；仅考虑下颌骨时，下颌骨的长度和额骨倾斜度对芒通偏差有正向影响，分别具有69.9％和68.6％的解释力。另一方面，当仅考虑关节盂窝时，关节盂窝对芒通偏离的影响很小，解释力为15.7％。在面部不对称中 下颌con突和下颌骨的左右差异比盂状窝的左右差异对门面偏移的影响更大。CNUDH，CNUDH-EXP-2017-016。2017年9月28日注册