恩施土家族苗族自治州错畸形患者Bolton指数分析

目的：通过对恩施土家族苗族自治州各民族不同类型的错畸形患者Bolton指数进行测量分析,探讨本州错畸形类型与Bolton指数之间的关系。方法：随机选择错畸形患者记存模型586副,按照安氏分类法分组,各组内再根据民族、性别进一步分组。测量Bolton指数并进行全面统计分析。结果：各类错畸形患者民族、性别间Bolton指数差异无显著性。安氏I类错与正常Bolton指数差异无显著性,但是安氏II类、安氏III类错与正常Bolton指数之间存在差异,安氏II类错Bolton指数偏小,安氏III类错Bolton指数偏大,差异有显著性。结论：上、下颌牙量不调可能是安氏II类I、II类错的主要原因之一。

Analysis of Bolton radios of different populations with different malocclusion in Enshi Tujia and Miao Autonomous Prefecture.

Objective：To determine the Bolton radios of different populations with different malocclusion in Enshi Tujia and Miao Autonomous Prefecture.Method：This study consisted of 240 subjects who served as the normal occlusion group and 576 patients divided into 3 malocclusion groups（ie,Class I,Class II,and Class III）.Anterior,posterior and overall Bolton ratios were determined and analyzed.Result：No signi？cant differences of anterior,posterior and overall Bolton ratios were found in population and gender.However,there were signi？cant differences of anterior,posterior and overall Bolton ratios between different occlusion groups.Conclusion：Intermaxillary tooth size discrepancy may be one of the important factors in the cause of Class II and Class III malocclusions.