摘要
目的:通过比较不同磨牙关系的安氏Ⅱ类错Bolton指数及Bolton不调量,探讨不同磨牙关系的安氏Ⅱ类错患者在上下颌牙量关系方面的差异。方法:以安氏II错162例为研究对象,按照磨牙关系不同分为磨牙关系远中尖对尖组(简称尖对尖组)114例,磨牙关系完全远中组(简称完全远中组)48例,分别对其模型进行牙冠宽度测量,计算Bolton指数,再根据Bolton指数正常值获取上颌Bolton不调量。两组之间进行统计学分析。结果:完全远中组全牙、前牙Bolton指数比值均大于尖对尖组,有统计学差异(P<0.05)。两组错间全牙Bolton不调的分布比率表现出统计学差异(P<0.05)。而前牙Bolton不调的分布比率未表现出统计学差异。两组错间Bolton不调量总和与Bolton不调程度的分布比率的比较未表现出统计学差异。结论:不同磨牙关系的安氏II类错畸形在上下颌牙量关系方面存在差异,在治疗时应该加以重视。
Objective： To compare the Bolton index and Bolton tooth size discrepancies between Angle class II mal- occlusion of different molar relationship. Methods： 162 casts of Class II malocclusion were selected which include 114 cases with cusp to cusp class II relationship （cusp to cusp group） and 48 cases with full distal molar relationship （full distal group）. Mesiodistal width of teeth were measured and Bolton index was calculated. Then by Bolton rate standards, the tooth size discrepancies were calculated. Statistical analysis were made between these two groups. Results： The total and anterior Bolton index in the full distal group were significantly larger than in the cusp to cusp group （P^0.05）. There was significant difference of the incidence of abnormal tolal Bolton index between the two classes（P〈. 05）, and there was no significant difference of the incidence of abnormal anterior Bolton index. There were no significant differences of Bolton tooth size discrepancies and distribution ratios according to the degree of 130- lion tooth size discrepancies between the two groups. Conclusion： There were differences of the intermaxillary tooth size discrepancies between Angle class II malocclusion Of different molar relationship ,which we should pay attention to during orthodontic treatment.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2011年第7期600-602,共3页
Journal of Oral Science Research
