上海地区中国人下颌第一磨牙远舌根发生率的研究  

Prevalence of mandibular three-rooted permanent first molars among Chinese people in Shanghai

作　　者：郭一波[1] 朱亚琴[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院口腔医学院口腔综合科上海市口腔医学重点实验室,上海200011

出　　处：《口腔医学》2011年第2期71-73,共3页Stomatology

基　　金：上海市科学技术委员会项目资助(08DZ2271100)

摘　　要：目的本研究对上海地区中国人下颌第一磨牙远舌根发生率进行探讨。方法本试验为随机试验。具有双侧下颌第一磨牙的500例患者被纳入研究,采用全景片的方法评估下颌第一磨牙远舌根的发生率。结果发现有151例(30.20%)患者具有远舌根的下颌第一磨牙,其中男82例,女69例,其发生率在不同性别人群中没有显著性差异(P=0.205),右侧(n=122,12.20%)和左侧(n=129,12.90%)下颌第一磨牙中的发生率也没有显著差异(P=0.610)。这部分患者中有65.56%(99/151)的双侧下颌第一磨牙均为远舌根。结论上海地区中国人远舌根的发生较普遍,且有较高的对称性。Objective This study assessed the prevalence of mandibular three-rooted permanent first molars among Chinese in Shanghai.Methods This study was a randomized trial.A total of 500 patients possessing both mandibular first molars were selected.This study evaluated the prevalence of mandibular three-rooted permanent first molars using panoramic radiographs.Results One hundred and fifty-one（151/500,30.20%）patients were found to have a mandibular three-rooted first molar,eighty-two males and sixty-nine females（P=0.205）.The occurrence of such permanent three-rooted mandibular first molars did not differ significantly between the right side（n=122,12.20%） and the left side（n=129,12.90%;P=0.610）.65.56%（99/151） of all the patients were with bilateral three-rooted molars.Conclusions The prevalence and bilateral incidence of mandibular three-rooted first molars among in Chinese Shanghai population was high.

关 键 词：下颌第一磨牙 远舌根 

分 类 号：R780.4[医药卫生—口腔医学]