中华口腔医学研究杂志(电子版) ›› 2013, Vol. 07 ›› Issue (01) : 53 -56. doi: 10.3877/cma.j.issn.1674-1366.2013.01.010 × 扫一扫
临床研究
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出版日期:
通信作者:
Mu CHEN1, Zheng-ming LI1,†(), Xue LIU1, Zhi-cai FENG1, Yong-qian HUANG1
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陈沐, 李正明, 刘学, 冯志才, 黄永谦. 安氏Ⅱ类错 畸形牙冠宽度和Bolton 指数测量分析[J/OL]. 中华口腔医学研究杂志(电子版), 2013, 07(01): 53-56.
Mu CHEN, Zheng-ming LI, Xue LIU, Zhi-cai FENG, Yong-qian HUANG. Study in the mesiodistal width of teeth and Bolton index of Angle's ClassⅡmalocclusion patient[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2013, 07(01): 53-56.
目的
分析安氏Ⅱ类错 畸形患者的Bolton 指数,并探讨其上下牙量关系对其症状及疗效的影响。
方法
以安氏Ⅱ类1 分类和2 分类错畸形患者各100 例为研究对象,分别进行牙冠宽度测量并计算Bolton 指数。
结果
安氏Ⅱ类1 分类错 的前牙宽度比安氏Ⅱ类2 分类错大,差异有统计学意义。 Bolton 指数不调的基本分布情况为:指数正常组>指数过小组>指数过大组。 Bolton指数前牙比和全牙比呈现安氏Ⅱ类2 分类错 >安氏Ⅱ类1 分类错 ,但其差异无统计学意义。
结论
安氏Ⅱ类错 中有约50%病例Bolton 指数在正常值范围之外,存在上下牙量不协调。
Objective
To investigate Bolton index of Angle's ClassⅡmalocclusion patients and to study the influences of an upper and lower tooth size relations on the symptoms and curative effect.
Methods
100 casts of Class Ⅱ division 1 and Class Ⅱ division 2 malocclusion were selected,respectively. Mesiodistal width of teeth was measured and Bolton Index was calculated.
Results
The results indicated that the sum of mesiodistal width of maxillary anterior teeth in Class Ⅱdivision 1 malocclusion were larger than that in Class Ⅱdivision 2 malocclusion with significant differentce. The ratio of Bolton Index among the normal ranges was larger than that among lower ranges and among higher ranges. Bolton Index of ClassⅡdivision 2 malocclusion was larger than that Class Ⅱdivision 1 malocclusion without ignificant differentce.
Conclusion
More than half of all patients have the Bolton ratio outside the normal ranges and the maxillary and mandibular teeth size discrepancy.