正畸拔除前磨牙对Bolton指数全牙比的影响

上海口腔医学 ›› 2014, Vol. 23 ›› Issue (4): 485-488.

正畸拔除前磨牙对Bolton指数全牙比的影响

魏竹亮, 王以玲, 张文美

济南市口腔医院正畸科,山东济南 250001

收稿日期:2013-04-03 出版日期:2014-08-20 发布日期:2014-10-20
通讯作者: 魏竹亮,E-mail:wzljnkqzj@126.com
作者简介:魏竹亮(1971-), 男, 硕士, 主治医师

Effects of premolar extractions on Bolton index overall ratios

WEI Zhu-liang, WANG Yi-ling, ZHANG Wen-mei

Department of Orthodontics, Jinan Dental Hospital. Jinan 250001, Shandong Province, China

Received:2013-04-03 Online:2014-08-20 Published:2014-10-20

摘要/Abstract

摘要： 目的:探讨正畸模拟拔除前磨牙对Bolton指数全牙比的影响。方法:随机选择198例不同类型错畸形患者的记存模型,分别计算拔牙前和模拟4种模式拔牙后的Bolton指数全牙比。采用SPSS17.0软件包对数据进行统计学分析。结果:拔牙后的Bolton指数全牙比均有变小趋势,其中拔5/5、5/4模式降低更明显,与拔4/4、4/5模式相比有显著差异(P<0.01),但不同错类别间无显著差异(P>0.05)。结论:正畸医师在制订治疗方案时,应考虑到拔牙矫治会降低Bolton指数全牙比。

关键词: 模拟拔牙, 前磨牙, Bolton指数, 全牙比

Abstract: PURPOSE:To investigate the effect of premolar extraction on Bolton index overall ratios. METHODS:Bolton index overall ratios were measured in 198 randomly chosen dental casts of three types of Angle’s malocclusions before and after 4 combinations of hypothetical premolar extractions. The data was processed using SPSS 17.0 software package. RESULTS:The overall ratios decreased in each class of Angle’s malocclusion after all combinations of premolars extraction, and the decreases in combinations of 5/5 and 5/4 extractions were significantly greater than that of 4/4 and 4/5 combinations (P<0.05), but no significant difference was found between different types of malocclusion (P>0.05). CONCLUSIONS:When formulating a treatment plan involving premolar extractions, orthodontists should consider that the Bolton overall ratios may decrease.

Key words: Hypothetical tooth extraction, Premolar, Bolton index, Overall ratios

中图分类号:

R783.5

魏竹亮, 王以玲, 张文美. 正畸拔除前磨牙对Bolton指数全牙比的影响[J]. 上海口腔医学, 2014, 23(4): 485-488.

WEI Zhu-liang, WANG Yi-ling, ZHANG Wen-mei. Effects of premolar extractions on Bolton index overall ratios[J]. Shanghai Journal of Stomatology, 2014, 23(4): 485-488.

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