温州地区人上颌第一恒磨牙牙根解剖的研究  

Root anatomy of maxillary first molars in people from WenZhou region

作　　者：汪敏[1] 韦永珍[1] 潘乙怀[2] 

机构地区：[1]温州医学院,浙江温州325000 [2]温州医学院附属口腔医院牙体牙髓科,浙江温州325000

出　　处：《牙体牙髓牙周病学杂志》2011年第5期263-266,共4页Chinese Journal of Conservative Dentistry

基　　金：浙江省新苗人才计划项目(2008R40G2090026);温州市科技计划项目(Y20090010)

摘　　要：目的:了解温州地区人上颌第一恒磨牙牙根解剖基本特点。方法:收集60个温州地区人上颌第一恒磨牙,肉眼观察牙根外形、根尖孔数目、类型;游标卡尺测量牙根长度指标、根尖孔到牙根顶点的距离;透明牙标本法观察根管系统。结果:上颌第一恒磨牙55.4%根尖孔不在根尖顶点,近中颊根双根管率为61.6%,3根管率为1.7%。结论:温州地区人上颌第一恒磨牙牙根、根管形态复杂,应给予足够的重视。AIM：To study the root anatomy of the maxillary first molars in people from Wenzhou region.METHODS：A total of 60 extracted maxillary first molars were collected and numbered.Macro morphology of the root,degree of abrasion,number and type of apical foramen were observed.Vernier was used to measure the length indexes and distance from the apical foramen to the root apex.Clearing technique was used to investigate the root canal systems.RESULTS：55.4% of the apical foramens did not locate at their apices,61.6% of mesiobuccal roots had two canals,and 1.7% of teeth had three root canals.CONCLUSION：The root anatomy of the maxillary first molars in people from Wenzhou region is very complex.

关 键 词：上颌第一恒磨牙 近中颊根 根尖孔 透明牙标本 

分 类 号：R780.4[医药卫生—口腔医学]