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目的 :建立天津市恒牙早期正常牙合Steiner分析法各项指标的正常值范围 ,评价其颅颌面特征。方法 :通过70名天津籍恒牙早期正常牙合头颅X线侧位片的描绘、定点 ,测量Steiner分析法各项指标的均数和标准差 ,与国内不同地区进行比较 ,同时推算其Cheveron值。结果 :得出Steiner分析法的正常值 ;男女间比较除Pg -NB外均无显著性差异 ;与国内部分地区恒牙早期正常值比较有差异 ;ANB角与 1-NA和 1-NB之间有相关性 ,得出Cheveron值。结论 :不同地区正常牙合青少年其X线头影测量正常值有一定差异 ,因此各地区应有各自相应的正常值标准 ,不应强求一致
OBJECTIVE: To establish the normal range of the indicators of early normal occlusion analysis of permanent teeth in Tianjin and evaluate the characteristics of cranio-maxillofacial. Methods: The 70 normal Tianjin patients permanent normal craniocerebral cranial X-ray films were plotted and fixed point, the average and standard deviation of the Steiner analysis of various indicators were measured, and compared with different parts of the country, and calculate the Cheveron value . Results: The normal value of Steiner analysis was obtained. There was no significant difference between male and female except for Pg-NB. There was difference between normal menarche and normal early teeth in some areas of China. Between ANB angle and 1-NA and 1-NB Relevant, come to Cheveron value. Conclusion: There are some differences between the normal occlusion adolescents in different areas of the normal measurement of X-cephalometry, so each region should have its own corresponding normal standard, should not be consistent