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[目的]研究垂直生长型安氏Ⅱ类1分类病例侧貌美学指标在矫治前后改变的相关性分析,以期为正畸临床治疗方案的制定和治疗方法提供参考。[方法]选择38例垂直生长型安氏Ⅱ类1分类拔牙病例,在矫治前及矫治后拍摄头颅侧位片,运用5项美学指标进行评价青少年与成人矫治前后的美学改善效果以及相关性分析。[结果]青少年组在治疗后Y﹤0者占纳入样本的85℅,前后比较差异有统计学意义;成人组在正畸治疗后值Y﹤0者占其纳入样本的61.1℅(P﹤0.001);青少年的侧貌美学指标与多项软硬组织测量项目具有相关性,而成人的侧貌美学指标主要只与前牙以及上下唇测量项目具有相关性。[结论垂直生长型Ⅱ类1分类青少年与成人病例通过正畸治疗后侧貌美学评价都有一定的改善,鼻唇颏关系基本上得到了更好的协调,同时青少年与成人软组织的适应改建能力有所差异,青少年侧貌在正畸治疗后能得到更大的改善,提示垂直生长型Ⅱ类1分类拔牙病例在早期治疗更能够改善侧貌美观。
[Objective] To study the correlation analysis of the changes of the topographic and aesthetical indexes of vertical growth type Class Ⅱ division 1 patients before and after orthodontic treatment, in order to provide a reference for the formulation and treatment of orthodontic treatment. [Methods] 38 cases of vertical growth type Ⅱ division 1 malocclusion were selected. The cephalometric films were taken before and after correction. The five aesthetic indexes were used to evaluate the aesthetics improvement effect and correlativity of adolescent and adult before and after treatment . [Results] There was a significant difference between before and after treatment in adolescents when the number of Y <0 was 85% of the patients in the adolescent group. The value of Y <0 in the adult group after the orthodontic treatment accounted for 61.1% (P <0.001) ). The profile of aesthetics of adolescents is related to many items of soft and hard tissue measurement. The profile of adult aesthetics is mainly related to anterior teeth and upper and lower lip measurement items. [Conclusions] The orthodontic evaluation of orthodontic treatment in vertical growth type Ⅱ division 1 adolescents and adults has some improvement, and the relationship between the nasolabial chin and the chin basically has been better coordinated. At the same time, the adolescent and adult soft tissue adaptability to alteration There are some differences. Adolescent profile can be greatly improved after orthodontic treatment, suggesting that vertical growth type Ⅱ 1 classification of tooth extraction in early treatment is more able to improve the appearance of beautiful.