摘要
目的:利用锥体束CT(cone beam computed tomography,CBCT)评估下颌第一磨牙近中中央根管(middle mesial canal,MMC)的发生率并分析与之相关的临床因素。方法:从就诊人群中(340例患者)收集下颌第一磨牙CBCT影像资料并观察近中根的形态特点。评估MMC的发生率及其与年龄和性别之间的关系。结果:共纳入446颗下颌第一磨牙的CBCT影像资料,其中12颗牙(2.7%)具有近中中央根管。MMC发生率与性别有关(女0.86%,男4.65%,P<0.01),与年龄无关(P>0.05),且以融合型为主(66.7%)。结论:中国华中地区下颌第一磨牙近中中央根管发生率较低,以融合型为主,但在各个年龄段都有可能发生。
Objective:To evaluate the incidence of middle mesial canal(MMC)of mandibular first molar by cone beam computed tomography(CBCT)and analyze the clinical factors related to it.Methods:CBCT images of mandibular first molar were collected from 340 patients.Their morphological characteristics of mesial root were observed.Chi-square test was used to evaluate the incidence of MMC and its relationship with age and sex.Results:CBCT imaging data of 446 mandibular first molars were included in the study,of which 12 teeth(2.7%)were observed to have mesial central root canals.The incidence of MMC was related to sex(female 0.86%vs.male 4.65%,P<0.01),unrelated to age(P>0.05).Most of these MMCs were of fusion type(66.7%).Conclusion:The incidence of MMC of mandibular first molars in central China is relatively low.Most of them are of fusion type.MMC is likely to occur at all ages.
作者
倪彩霞
胡雪凌
余程
NI Cai-xia;HU Xueling;YU Cheng(Department of Stomatology,Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology,Hubei Wuhan 430030,China;Department of Stomatology,Ankang Central hospital,Shaanxi Ankang 725000,China)
出处
《临床口腔医学杂志》
2020年第1期36-38,共3页
Journal of Clinical Stomatology
关键词
下颌第一磨牙
近中中央根管
锥体束CT
Mandibular first molar
Middle mesial canal(MMC)
Cone beam computed tomography(CBCT)
