Rongo Roberto, Antoun Joseph Saswat, Lim Yi Xin, Dias George, Valletta Rosa, Farella Mauro
a PhD Student, Department of Neuroscience, Reproductive Science and Oral Science, University of Naples "Federico II,", Naples, Italy.
Angle Orthod. 2014 Sep;84(5):788-94. doi: 10.2319/092313-699.1. Epub 2014 Feb 21.
To evaluate the relationship between mandibular divergence and vertical and transverse dimensions of the face.
A sample was recruited from the orthodontic clinic of the University of Otago, New Zealand. The recruited participants (N = 60) were assigned to three different groups based on the mandibular plane angle (hyperdivergent, n = 20; normodivergent, n = 20; and hypodivergent, n = 20). The sample consisted of 31 females and 29 males, with a mean age of 21.1 years (SD ± 5.0). Facial scans were recorded for each participant using a three-dimensional (3D) white-light scanner and then merged to form a single 3D image of the face. Vertical and transverse measurements of the face were assessed from the 3D facial image.
The hyperdivergent sample had a significantly larger total and lower anterior facial height than the other two groups (P < .05), although no difference was found for the middle facial height (P > .05). Similarly, there were no significant differences in the transverse measurements of the three study groups (P > .05). Both gender and body mass index (BMI) had a greater influence on the transverse dimension.
Hyperdivergent facial types are associated with a long face but not necessarily a narrow face. Variations in facial soft tissue vertical and transversal dimensions are more likely to be due to gender. Body mass index has a role in mandibular width (GoGo) assessment.
评估下颌骨发散度与面部垂直及横向维度之间的关系。
从新西兰奥塔哥大学正畸诊所招募样本。根据下颌平面角将招募的参与者（N = 60）分为三个不同组（高发散组，n = 20；正常发散组，n = 20；低发散组，n = 20）。样本包括31名女性和29名男性，平均年龄21.1岁（标准差±5.0）。使用三维（3D）白光扫描仪为每位参与者记录面部扫描图像，然后合并形成面部的单个3D图像。从3D面部图像评估面部的垂直和横向测量值。
高发散组的总面部高度和前面部下部高度明显大于其他两组（P < 0.05），尽管中面部高度未发现差异（P > 0.05）。同样，三个研究组的横向测量值也没有显著差异（P > 0.05）。性别和体重指数（BMI）对横向维度的影响更大。
高发散面部类型与长脸相关，但不一定与窄脸相关。面部软组织垂直和横向维度的变化更可能归因于性别。体重指数在评估下颌宽度（GoGo）方面有作用。
