第三磨牙牙尖数目与牙根类型关系的研究
Study of Relationship between the Number of Cusp and the Type of Root of the Third Molars
王超飞 1刘梦田 1徐珂 1苏丽 1唐哲 1吴文慧1
作者信息
- 1. 华北理工大学口腔医学院 河北 唐山 063000
- 折叠
摘要
目的：研究第三磨牙牙尖数目与牙根类型关系，从而为第三磨牙的顺利拔除提供帮助。方法：记录519颗上颌和348颗下颌完整第三磨牙牙合面牙尖数目和牙根类型，研究牙尖数目与牙根类型的关系。结果：上下颌第三磨牙均为四尖型出现频率最高（28．9％、43．1％），四尖型上颌牙Ⅲ型根（30．0％）出现频率最高，四尖型下颌牙Ⅳ型根（即双根，34．7％）出现频率最高。结论：通过观察第三磨牙牙尖数目，可以初步判断其牙根类型，为临床牙拔除术提供参考和指导。
Abstract
Objective:The aim of this paper is to study the relationship between the number of cusp and the type of root of the third molars,providing guidance on the removal of the third molars.Methods:Keeping a record of the number of cusp and the type of root of 519 third maxil ary molars and 348 mandibular third molars,then studying the relationship.Results:Both third maxil ary molars and mandibular third molars have a high frequency of 4 cusps(28.9%、43.1%).30.0% of third maxil ary molars with 4 cusps have 1 root(type III),34.7% of mandibular third molars with 4 cusps have 2 roots(type Ⅳ).Conclusion:The type of root might be evaluated according to the number of cusp before the third molars are extracted.
关键词
第三磨牙/牙尖/牙根Key words
Third molar/Cusp/Root引用本文复制引用
出版年
2015
NETL
NSTL
维普
万方数据