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目的:预测骨性Ⅲ类错患者双颌术后侧貌,经审美评分,确定侧貌美观度,为手术方案设计提供参考。方法 :选择重庆医科大学口腔医院正畸科骨性Ⅲ类错患者1例,以Photoshop CS4模拟患者术后侧貌,以Andrews美学理论二要素设计上颌硬组织前徙位置,以中国人软组织面型角设计下颌骨后退位置,预测出侧貌标准图P1。在P1上分别矢状向移动B’点及Pog’点±1、±2、±3、±5、±7 mm,获得20幅面型图,随机排列,由专业组、非专业组共128人评分;采用SPSS13.0软件包中的Wilcoxon秩和检验比较21幅预测图得分及2个评价组是否有差异。结果:21幅侧貌图得分具有显著差异(P<0.05)。被认为美观的侧貌得分由高至低:分别为图D3、D2、D1、B1、A1、P1、C1、A2、B2;被认为不能接受的侧貌图依次为:图C5、B5、C4、A5。专业组及非专业组的审美评分无显著差异(P>0.05)。结论:人们对侧貌美观度的认知不同,直面型最美观,其次是下颌或颏部稍后缩的面型,而下颌或颏部严重前突或后缩被认为是很不美观且不能为人接受。
OBJECTIVE: To predict the facial features of patients with skeletal Class Ⅲ malocclusion after aesthetic correction, to determine the aesthetic appearance of the facial features and to provide a reference for the design of surgical procedures. Methods: One case of orthodontic skeletal Class Ⅲ malocclusion was selected from Department of Stomatology, Chongqing Medical University. Using Photoshop CS4 to simulate the postoperative contour of the patient, Andrews aesthetic theory was used to design the location of maxillary hard tissue before migration. The Chinese soft tissue surface Angle design mandibular retraction position, predicts the appearance of the standard map P1. A total of 120 faceted images were randomly placed on the P1 and shifted to the B ’point and the Pog’ point by ± 1, ± 2, ± 3, ± 5 and ± 7 mm, respectively. A total of 128 Score; using SPSS 13.0 software package Wilcoxon rank sum test to compare the 21 predictive chart scores and two evaluation groups are there any differences. Results: There were significant differences in scores of the 21 profiles (P <0.05). The topographic appearances considered to be aesthetically pleasing to the eye are as follows: D3, D2, D1, B1, A1, P1, C1, A2, B2; considered as unacceptable profiles are: A5. There was no significant difference in the aesthetic scores between the professional and non-professional groups (P> 0.05). CONCLUSIONS: People have different perceptions of facial appearance, with the most beautiful looking face, followed by a slightly reduced face shape of the jaw or chin, while severe protrusion or retraction of the mandible or chin is considered to be unsightly and not Accepted.