目的 探索三维体表成像技术用于中国人面部轮廓形态三维特征的评估方法.方法 从既往就诊北京大学第三医院成形外科的求美者中按入组条件筛选出172例普通年轻女性和34例美学高评分年轻女性的三维照相图像,对其引入三维坐标系,进行面部高度、宽度、凸出与凹陷等面部轮廓形态特征的三维数据分析,比较两组间差异,初步总结出面部轮廓形态和美学特征.结果 美学高评分年轻女性与普通年轻女性均符合中面型,均不全符合“三庭五眼”标准,相比普通年轻女性,美学高评分年轻女性具有较小的前面宽,更加圆润饱满的上面部,内眦间距小,鼻部更为突出,颧颊部更加饱满,上唇前凸程度与下颏后缩程度均相对较小.结论 三维体表成像技术用于活体人面部表面轮廓测量与形态学评估,方法方便可行.初步完成了中国汉族年轻女性矢状位凸凹程度指标在内的活体面部表面轮廓三维特征的描述,可为面部整形手术术前形态设计、术后效果评估提供相对客观的参考依据.
Objective To explore the feasibility of our method on assessing the three-dimensional facial morphological features based on three-dimensional surface imaging techniques.Methods According to the admission criteria,three-dimensional facial images of 34 attractive young Chinese women and 172 healthy reference young women were selected from the three-dimensional facial images database of our department.For those images,anthropometric facial measurements including facial height,width,the degree of convexity and concavity were computed using three-dimensional surface imaging techniques combined with three-dimensional coordinate system.The variance between attractive group and reference group was analyzed and the facial morphological features of each group were preliminarily summarized.Results Both groups met the criteria of mesoprosopy,not the "vertical facial trisection and rule of fifths".The attractive group had a relatively narrow anterior facial frame,a more rounded and full upper face compared with the reference group.They also had smaller intercan thai width compared with the reference group.Moreover,the attractive group showed more prominent nose,more full and prominent medial cheek.In addition,the attractive group shared less protruded upper lips and less retruded chin compared with the reference group.Conclusions Assessing facial morphology using three-dimensional surface imaging techniques is a convenient and feasible method.The evaluation of sagittal facial convexity and concavity is an indispensable part of facial morphology features assessment.