鞍山地区错畸形患者的Bolton指数分析

Bolton Analysis in Different Malocclusion in Anshan Area

目的:分析鞍山地区错牙合畸形患者的Bolton指数及Bolton指数不调发生率的分布情况。方法:选择150例错牙合畸形患者的记存模型,安氏Ⅰ、Ⅱ、Ⅲ类错颌患者各50例,分别测量上、下颌前牙量和全牙量,计算Bolton指数值并对其分布进行分析。结果:鞍山地区安氏Ⅲ类错牙合畸形患者的前牙及全牙Bolton指数均大于安氏Ⅱ类,具有显著性差异(P<0.05);鞍山地区错牙合畸形患者的前牙比及全牙比不调的发生率分别为21.33%、13.33%,但是不同安氏分类间差异无统计学意义(P>0.05)。结论:鞍山地区错牙合患者的Bolton指数异常不是错牙合畸形发生的主要原因,但在临床制定矫治计划时应予以考虑。

Objective ： To analyze the frequencies of Bolton index ratios and Bolton tooth size discrepancy frequency in different malocclusions in Anshan. Methods： Bolton indexes were measured and analyzed in ran- domly chosen 150 dental casts of three Angle＇s malocclusions by the method described by Bolton. Results： Bolton indices of anterior and overall tooth size of Class patients were significiently greater than that of Class ]]. The anterior and overall tooth size discrepancies frequency were 21.33~ and 13. 33~ for all the malocclusions, respectively, and were no significant differences in anterior or overall tooth size discrepancies frequency among the three Angle＇s malocclusions in Anshan. Conclusion： Tooth size discrepancy of malocclu- sion patients was not the general cause of malocclusion, but Bolton＇s tooth size analysis be performed before initiation of orthodontic treatment in Anshan.