摘要
目的探讨面突角对美观侧貌唇突度的影响。方法选取侧貌较好的男女成人各一名，描绘其头颅侧位片的侧貌轮廓，制作成剪影图作为标准侧貌，利用图像处理技术改变标准侧貌的颏部位置，各获得5张具有不同面突角（面突角正常、增加5°、增加10°、减小5°、减小10°）的剪影图。在此基础上以E线为参考线，将各剪影图的上下唇分别后移1mm和前移1mm各4次，每张剪影图分别得到9幅具有不同唇突度的侧貌图。选择180名大学生对侧貌图进行审美评价。结果面突角正常时相对后缩的唇突度最受欢迎；随着面突角的增加，人群倾向于喜爱略微前突的唇部位置；而随着面突角的减小，人们则倾向于喜爱更加后缩的唇部突度。结论面突角对美观侧貌的唇突度有显著影响，面突角不同，唇突度的审美标准亦不同。对不同错验类型的临界拔牙患者进行矫治设计时应考虑面突角对唇突度的影响。
Objective To determine the influence of facial convexity on preferred lip position in profile. Methods Average male and female profiles were constructed from the profile of a young Chinese man and woman who have esthetic Chinese facial profile. Changes in facial convexity were established by altering the antero posterior position by protruding or retruding the chin in increments of 5° and 10° from the average profile. The lips were then protruded or retruded in 1 mm increments from the average profile and 9 silhouettes were arranged respectively. One hundred and eighty college students were asked to rate the top three most favored, well-balanced profiles. Results Slightly retruded lip positions were preferred for the average profile; The raters tended to prefer more retruded lip positions as the facial convexity decreases and more protruded lip positions as the facial convexity increases. Conclusions The facial convexity does significantly impact preferred lip position and different esthetic standards should be applied to the various profiles encountered in clinical practice. The results might be helpful in decisions between extraction and nonextraction treatment in borderline cases.
出处
《中华口腔正畸学杂志》
2009年第2期83-87,共5页
Chinese Journal of Orthodontics
关键词
面突度
唇突度
侧貌
Facial convexity
Lip position
Facial Profile
