摘要
目的:研究江苏地区汉族人群第三磨牙形态,为临床上第三磨牙的诊疗提供解剖依据。方法:观测100个江苏地区汉族人群第三磨牙的牙尖数目、牙根数目、牙根弯曲程度,利用游标卡尺测量其重要外形参数,并初步探讨其与性别的关系。结果:江苏地区汉族人群中,上颌第三磨牙以3尖型、4尖型多见(34%,44%),下颌第三磨牙以5尖型(62%)为主;上下颌第三磨牙均以单根或融合根多见(66%,64%),50%以上的牙根为重度弯曲;下颌第三磨牙牙根弯曲程度以及上颌第三磨牙冠长、冠厚和颈厚测量值在男女之间有统计学差异(P<0.05)。结论:江苏地区汉族人群第三磨牙牙尖数、牙根数、牙根弯曲程度及各牙体测量值间变异较大。
AIM：To provide the anatomical basis for the clinical treatment of third molars by studying the morphology of Hun＇s third molars in Jiangsu region. METHODS：One hundred extracted Han＇s third molars in Jiangsu region were studied. The following observations and measures were made ： （ 1 ） number of cusps, （2） number of roots, （ 3 ） the degree of external curvature of the roots, （4） total length, （5） coronal length, （ 6 ） coronal width, （ 7 ） coronal thickness, （8）cervical width, （9）cervical thickness. The relationship with gender was initially studied. RESULTS： The maxillay third molars of Han in Jiangsu region had three or four（34% ,44% ） cusps mainly. The mandibular third molars had five cusps（62% ） mainly. The roots of third molars of Hun in Jiangsu region were single or fused mainly（66%, 64% ） and more than 50% of the roots with severe bending. The degree of external curvature of the roots of the mandibular third molars and the measurements of maxillary third molars＇coronal length, coronal thickness and cervical thickness had significant difference between men and women（P 〈 0.05 ）. CONCLUSION：The types of cusps and roots, the degree of external curvature of roots and measurements of third molars of Han in Jiangsu region varied largely.
出处
《牙体牙髓牙周病学杂志》
CAS
北大核心
2009年第12期716-719,共4页
Chinese Journal of Conservative Dentistry
关键词
第三磨牙
外形
牙体测量
性别
third molars
morphology
measurement
gender
