上下颌基骨间前后关系在正畸诊断中极为重要,文献中所报道的评价指标已达10余种。本研究从统计学和几何学上对13种不同的测量项目进行了分析评价,并提出一种更为可靠的评价参数。 材料和方法 样本包含110例正常(牙合)朝鲜儿童,男女各55例,平均年龄10岁零6个月,测量项目包括以下13项内容:①SN平面与AB平面之交角(SN to Anteroposterior orthopedic relationship between maxillary and mandible is extremely important in orthodontic diagnosis. The evaluation index reported in the literature has reached more than 10 kinds. In this study, 13 different measurement items were analyzed and evaluated statistically and geometrically, and a more reliable evaluation parameter was proposed. Materials and Methods The sample included 110 normal occlusion children, 55 males and females, with an average age of 10 years and 6 months. The survey included the following 13 items: (1) SN to