论文部分内容阅读
目的 研究安氏Ⅲ类错牙合上下牙量不调的发生率以及各类错牙合Bolton分析的比较。方法 随机选取安氏Ⅰ类、Ⅱ类、Ⅲ类错牙合患者的模型 ,每组男女各 5 0例 ,共 30 0副模型。测量其Bolton的 3个比率以及牙量不调量的统计 ,并对Bolton 3个比率进行分析比较。结果 30 0例病例中Bolton指数不协调的占19 33% ,前牙比、后牙比、全牙比均呈ClassⅢ >ClassⅠ >ClassⅡ的趋势 ,均有显著性差异。结论 提示上下颌牙量关系不调是错牙合发生中一个不可忽视的因素 ,Bolton分析应成为正畸诊断和确定治疗计划的重要依据之一
Objective To investigate the incidence of malocclusion in Class III malocclusion and the comparison of various types of malocclusion Bolton analysis. Methods Randomly select the patients with Class Ⅰ, Class Ⅱ and Class Ⅲ malocclusion, 50 male and female in each group, with 30 cases in total. The three ratios of Bolton and the unadjusted amounts of teeth were measured, and the Bolton three ratios were analyzed and compared. Results In the 30 0 cases, the Bolton index was uncoordinated, accounting for 19.33%. The anterior teeth ratio, posterior teeth ratio and total teeth ratio all showed the trend of Class Ⅲ> Class Ⅰ> Class Ⅱ, with significant differences. The conclusion suggests that the unregulated relationship between the maxillary and mandibular molar is a non-negligible factor in the occurrence of malocclusion. Bolton analysis should be one of the important bases for orthodontic diagnosis and treatment planning