拉萨市藏族和汉族人群第三磨牙萌出情况调查  

Study of eruption of third molar in Tibetans and Hans in Lhasa

作　　者：周振[1] 王美青[2] 李楠[1] 王栋明[1] 肖浩[1] 

机构地区：[1]西藏军区总医院口腔科,拉萨850000 [2]第四军医大学口腔医学院关节病及颌面痛科,西安710032

出　　处：《口腔医学》2008年第3期142-144,共3页Stomatology

摘　　要：目的了解藏族和汉族人群第三磨牙萌出情况差异。方法1630个年龄在21岁～50岁之间,连续体检样本纳入本次研究,根据性别和民族分为4个组,每组按照年龄每隔6岁为1组分为5个组。常规口腔检查记录第三磨牙萌出情况。结果21岁～26岁组和27岁～32岁组:不同种族及不同性别间第三磨牙萌出率无显著差异(P>0.05),随着年龄增长,汉族女性、藏族男性和藏族女性第三磨牙萌出率出现降低和波动。藏族第三磨牙阻生率为16.97%,显著低于汉族人群的23.09%(P<0.05)。结论第三磨牙萌出数在藏族和汉族间差异不显著,藏族阻生牙和冠周炎发病率低于汉族人群。Objective To investigate the difference of third molar eruption between Tibetans and Hans. Methods 1630 cases, aged from 21 to 50 were included in the study. They were divided into Tibetan male, Tibetan female, Han male and Han female groups. The statuses of third molar were registerd by routine oral examination. Results The eruption rates showed no statistical difference between Tibetans and Hans in 21 - 32 years （ P 〉 0.05）. As the age increased the eruption rates were decreasing and fluctuating in Han females, Tibetan males and Tibetan females. The impacted third molars rate in Tibetans was 16.97%, significant lower than Hans＇ 23.09% （ P 〈0.05）. Concluslos The eruption rates showed no difference between Tibetans and Hans. Tibetans had a high incidence of impacted third molars and pericomnitis.

关 键 词：藏族 汉族 第三磨牙 萌出 

分 类 号：R781.21[医药卫生—口腔医学]