新疆、内蒙古等古代人群下颌智齿的比较  

Degeneration comparison of lower third molar among some ancient Chinese populations

作　　者：戴成萍[1] 李海军[1] 

机构地区：[1]中央民族大学民族学与社会学学院,北京100081

出　　处：《解剖学杂志》2014年第4期520-522,共3页Chinese Journal of Anatomy

基　　金：国家自然科学基金青年科学基金（41102015）;中国科学院战略性先导科技专项（XDA05130102）;北京市社会科学规划项目（12LSC013）;北京市支持中央在京高校共建项目-教改子项目

摘　　要：目的：分析新疆、内蒙古等地区古代人群下颌第3磨牙（M3）的萌出特点.方法：将M3分为正常、半退化、缺失3种类型,然后分析不同人群、性别、侧别等方面的特点和规律.结果：新疆与土城子人群M3正常的比例男＞女;喇嘛洞、姜家梁人群M3正常的比例都表现为男女间较接近;姜家梁人群女性M3正常的比例明显高于土城子、喇嘛洞、新疆人群;综合分析所有人群显示左右侧M3间表现差别不大.结论：M3的萌出情况在不同人群间有不同的表现,侧别差异不明显.Objective：To understand the degeneration of the lower third molar （M3） of some ancient Chinese populations.Methods：This study was conducted on 456 human mandibles.M3 was divided into 3 types：normal,degeneration and absent,and then comparisons were made among different populations.Results：The frequency of ＂normal＂ in Xinjiang and Tuchengzi population：male＜female; while male≈female in Lamadong and Jiangjialiang population.The frequency of ＂normal＂ of M3 was higher in female of Jiangjialiang than in Tuchengzi,Lamadong and Xinjiang population.Conclusion：The morphology of M3 differs among populations,and M3 shows no significant difference between left and right sides.

关 键 词：新疆 内蒙古 人群 下颌骨 第3磨牙 退化 

分 类 号：R782.11[医药卫生—口腔医学]