新疆维吾尔族正常青少年X线头影测量研究

目的:建立维吾尔族正常青少年St ei ner分析法的正常值,并探讨其颅面硬组织结构的性别差异以及同性别维吾尔族和汉族青少年之间的种族差异。方法:对1500例乌鲁木齐市维吾尔族中学生进行普查,从中选取正常青少年70例(男34例,女36例),年龄12～18岁,平均15.4岁,拍摄牙尖交错位时头颅定位侧位片,并用北京医科大学口腔正畸科提供的头颅测量软件(华正头影测量软件)进行St ei ner分析。结果:①得到了新疆维吾尔族正常青少年颅面硬组织头影测量St ei ner分析均值和标准差。统计学分析表明,维吾尔族男女青少年角度和线距测量值之间差异无统计学意义;②与同性别汉族青少年比较,维吾尔族青少年除ANB、OP/SN、SL、Po-NB(男)、SNA(女)、SNB(女)、MP/SN(女)无统计学差异外(P>0.05),其余测量项目均有统计学差异。结论:维吾尔族青少年的牙弓突度小,上下切牙直立,颏部较凸,髁状突位置较靠前,呈Ⅲ类面型特征,与汉族青少年之间有明显的种族差异。

Steiner's cephalometric norms for the Uygur adolescents in Xinjiang

Objective To establish the Steiner’s cephalometric norms for Uygur adolescents,compare the gender and inter-racial variations in dentoskeletal structures,and to test the hypothesis that there are racial differences in cephalometric measurements between Uygur and Han nationality adolescents.Methods 70 subjects aged 12～18 years(male 34,female 36,mean age 15.4) with classⅠnormal occlusion and balanced facial aesthetics selected from 1500 Uygur students.The lateral cephalograms of eachone were taken and measured by Hua Zheng cephalometric measurement software(provided by Bei Jing medical university) based on application of Steiner methods.Results ①The cephalometric Steiner norms for Uygur adolescents with normal occlusion have established.statistical analysis indicates that there are no significant gender differences;②compared with the same gender Han nationality adolescents,There were significant differences on except ANB、OP/SN、SL、Po-NB(male)、SNA(female)、SNB(female)、MP/SN(female)(P>0.05)indexes.Conclusion The convexity of Uygur adolescents is smaller than Han nationality adolescents,also possessed more retrusive upper and lower incisors,more protrusive chin,more anteriorly located condylion and upwards having type Ⅲ facial features,compared with the same genders Han adolescents,it exhibits unique characteristics of craniofacial structure.