颅面骨美学假说

目的:在己建立正常人颅面骨三维定量测量数据库的基础上,筛选出女性美貌人群,探求其颅面骨所具有的和谐美学比例规律。方法:选择正常女性且面容美貌者90名,在正常牙尖交错位状态下行螺旋CT扫描,由工作站进行颅面骨三维重建,使用三维测量软件对颅面骨三维影像结构进行三维测量。将测量的线距,角度,比值等数据进行统计学分析。结果:在统计学分析中,可以由计算机自动计算任意例数组的平均数、标准差、标准误、中位数、变异系数和95%的可信区间,可求出任意两组数据的的比值和任意几组数据的相关关系,回归方程。美貌女性下颌角宽度的多元逐步回归方程:Y=0.584X1 0.766X2 0.268X3-0.594X4-14.571;颧面宽:Y=0.789X1 0.147X2 0.370X3 0.114X4 27.808。结论:涉及下颌骨的线距和角度的变异系数大于上颌骨大于颅底,下颌骨的变异程度较大,数据比值的标准差远小于数据范围的标准差。揭示颅面骨轮廓美容规律,有助于对面部骨轮廓美容整形手术的术前设计和手术术式的选择提供参考,有助于对美貌人群颅面骨正常发育过程进行形态学研究提供量化分析依据。

The hypothesis of aesthetics of the skull

Objective The three-dimensional(3D) craniofacial measurements were studied through the quantitative computed tomography(CT). The rule of quantitative measurement of three-dimensional craniofacial bone was explored as mandible in physiological position. Methods 90 aesthetics female were examined by spiral volumetric CT(GE SR-7000). 3D craniofacial bone images were reformatted and 3d measurements were performed in SUN Workstation respectively. 33 points were defined in the 3D craniofacial structure in screen,14 distances and 11 angles were measured,and 12 ratios were calculated in each case. All data were transfered into the database based on the SPSS software. There is all information of one case (such as number,sex,age,distances,angers) in one row; each column is a measurement item. The mean,standard deviation,standard error,medium,coefficient of variation and 95% confidence interval of data can be calculated and the correlation,regression between several groups of measurement item can be proceeded by computer automatically in the dynamic database. Results 3D craniofacial bone imagings were displayed in arbitrary views without disturbing superposition by using cutting,rotating and 3D measurement procedures. The large data volume provides more information of spacial relationship of skull base,zygomatic bone,maxilla,mandible and vertebra.,The standard deviation of ratios is further smaller than the standard deviation of distances and angles. With stepwise regression,the equation is (Go-Go) Y=0.584X1 0.766X2 0.268X3-0.594X4-14.571;(Tz-Tz):Y=0.789X1 0.147X2 0.370X3 0.114X4 27.808. Conclusion The database offers reference of the studying of growth rule of craniofacial bone of aesthetics female. It will help improve diagnostic accuracy,staging of reconstruction,precision of corrective surgery,and follow-up patients.