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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 :恒牙列早期McNamara分析法的测量值存在地区和种族差异
OBJECTIVE: To establish the normal value of McNamara analysis of normal young adolescents in the early stage of permanent dentition in Chengdu. Methods: Sixty-seven adolescents with permanent dentition in Chengdu were enrolled in this study. The X-ray skull lateral radiographs were taken for McNamara analysis. And compared with the normal values of McNamara’s analysis in Shanghai and Caucasian. Results: There was no gender difference in the measurement of McNamara in the early stage of permanent dentition in Chengdu. Chengdu permanent dentition early normal effective maxillary length of young people, effective lower jaw length and lower front lower than the Shanghai area. Chengdu area juvenile upper and lower anteroposterior than white large. CONCLUSION: There are regional and ethnic differences in the measurements of McNamara in the early dentition