成都地区67名正常青少年头影测量McNamara分析

McNamara Cephalmetric Analysis of the 67 Chengdu Adolescents with Normal Occlusions

目的 :建立成都地区恒牙列初期正常青少年McNamara分析法的正常值。方法 :选取成都地区恒牙列初期正常青少年 6 7名 ,摄X线头颅侧位定位片 ,进行McNamara分析。并与上海地区和白种人McNamara分析法的正常值进行比较。结果 :成都地区恒牙列初期正常青少年McNamara分析法的测量值无性别差异。成都地区恒牙列初期正常青少年有效上颌长度、有效下颌长度和下前面高小于上海地区。成都地区青少年上下前牙突距比白种人大。结论

Objective: The purpose of this study was to obtain the normal value of McNamara analysis for Chengdu adolescents with normal occlusion of early permanent dentition.Methods: McNamara analysis was conducted on the basis of the lateral cephalograms of 67 Chengdu adolescents with normal occlusions, and the obtained data was compared with that of Shanghai adolescents and McNamara. Results: There was no difference in the normal values of McNamara analysis between male and female Chengdu adolescents. The Comparative results between Chengdu and Shanghai adolescents indicated significantly larger values of Shanghai adolescents in effective middle facial lengths, mandibular lengths and lower anterior facial heights. The vertical distances from the upper incisor to point A and, from the lower incisor to A_Po line of Chengdu adolescents were larger than those of white adolescents.Conclusion: There is significantly difference in values of normal occlusions of McNamara analysis among different regions and different races.