重庆地区55名正常(牙合)少年儿童X线头影测量McNamara值分析

目的：建立重庆地区少年儿童X线头影测量McNamara分析法正常值。方法：选择重庆地区正常He少年儿童共计55名，拍摄头颅定位侧位片，作McNamara分析，并与成都地区、上海地区以及白种人McNamara分析法正常值进行比较.结果：经t检验，重庆地区正常He少年儿章McNamara分析法测量值男女之间部分指标有显著性差异；重庆地区与成都地区、上海地区、McNamara正常值部分指标之间也有显著性差异．结论：恒牙初期McNamara分析法头影测量值有种族和地区差异，各民族、各地区应建立当地头影测量正常值。

McNamara cephalometric analysis of the 55 Chongqing adolescents with normal occlusion

Objective:The purpose of this study was to obtain the normal value of McNamara analysis for Chongqing adolescents with normal occlusion of permanent dentition.Methods:Chongqing adolescents with normal occlusion were taken 55 lateral cephalograms.McNamara analysis was conducted and the obtained data were compared with that of Chengdu,Shanghai and McNamara,respectively.Results:There was significant difference in the normal values of McNamara analysis between male and female Chongqing adolescents by t test;there was significant difference between Chongqing and Chengdu,Chongqing and Shanghai,Chongqing and McNamara also.Conclusion:There is significant difference in values of normal occlusion of McNamara analysis in different regions and different races.