山东省正常?少年儿童X线头影测量的Steiner分析

目的：建立山东省正常?少年儿童X线头影测量Steiner分析法的均值和标准差,并研究其颅面结构的性别差异、地域差异及增龄性变化。方法：按正常?标准选择156名山东省正常?少年儿童,拍摄X线头颅定位侧位片，采用Steiner分析法进行定点及测量，进行男女间，替牙期与恒牙初期之间的比较。并与哈尔滨和广州地区恒牙初期儿童正常值比较。结果：得到了山东省正常?少年儿童Steiner分析法的正常值;女性下颌骨整体有后缩趋势,男性从替牙期到恒牙初期?平面倾斜度变缓；与哈尔滨人相比，山东人的上颌相对前突；而与广州人相比，广州人的双颌更加前突。结论：用Steiner分析法测得的正常值男女间、替牙期与恒牙期之间均存在差别，不同地区人群头影测量值也存在差别。

Cephalometric study by Steiner analysis in children with normal occlusion in Shandong province

Objective:To establish the standard values of Steiner cephalometric analysis for children with normal occlusion in Shandong province,and to analyze the craniofacial characteristics in different sexes,areas and ages.Methods: Lateral cephalograph was taken in 156 children of Han nationality with normal occlusion in Shandong province,and then Steiner analysis and statistics were made. The results between sexes,two dentitions and different areas were compared by t-test.Results: The norms with derivation measured with Steiner analysis were established.The mandible of female was more retracted than that of male,and the mandibular plane of males was getting alleviate during development.Children in Shandong province had more protruded maxillary than those in Haerbin,and children in Guangzhou had even more protruded jaws.Conclusion: Cephalometric norms are different in sexes,areas and dentitions.