下颌第二磨牙C形根管构型及其影响因素的CBCT研究  

Configuration and Influencing Factors of C-shaped Root Canal in Mandibular Second Molars by CBCT

作　　者：林太伟 刘明 LIN Taiwei;LIU Ming(Department of Oral and Maxillofacial Imaging,Stomatological Hospital of Xia-men Medical College,Xiamen 361000,China;Xiamen Key Laboratory of Oral Disease Diagnosis and Treat-ment,Xiamen 361000,China;Second Department of Endodontics,Stomatological Hospital of Xiamen Med-ical College,Xiamen 361000,China.)

机构地区：[1]厦门医学院附属口腔医院口腔颌面影像科,福建厦门361000 [2]厦门市口腔疾病诊疗重点实验室,福建厦门361000 [3]厦门医学院附属口腔医院牙体牙髓病二科,福建厦门361000

出　　处：《口腔医学研究》2024年第1期46-50,共5页Journal of Oral Science Research

基　　金：福建省中青年教师教育科研项目(科技类)(编号:JAT210486)。

摘　　要：目的:应用CBCT对下颌第二磨牙C形根管的解剖形态进行评估。方法:根据CBCT影像选取出579例具有下颌第二磨牙C形根管的患者,分别进行对称性、根面沟及不同横断面的根管形态分析。结果:双侧下颌第二磨牙同为C形根管有80.0%;1047颗C形根管在根管口、根中、根尖的根管构型比较差异具有统计学意义(P<0.05);不同性别在根中与根尖的根管构型比较差异有统计学意义(P<0.05);18~25岁组与26~50岁组在3个不同横断面上的根管构型比较差异有统计学意义(P<0.05);具有舌侧沟与具有颊舌侧沟的在不同横断面上的根管构型比较差异有统计学意义(P<0.05)。结论:利用CBCT,可以准确判断下颌第二磨牙C形根管构型及走向,有助于对形态复杂的C形根管进行诊治。Objective:To evaluate the morphology of C-shaped root canal in mandibular second molars by CBCT.Methods:Digitized CBCT images from 579 subjects with C-shaped root canal in mandibular second molar were obtained.The incidence of symmetry,the root groove,and canal morphology in different cross sections were analyzed.Results:The incidence of symmetry was 80.0%.Four hundred and six mandibular second molars with Cshaped canal showed significant differences in the root canal configuration of root canal orifice,middle,and apical(P<0.05).There was statistical difference in the root canal configuration of middle and apical of root canal between males and females(P<0.05).There was statistical difference in the root canal configuration of three crosssections between 18-25 and 26-50 age groups(P<0.05).There was statistical difference in the root canal configuration between the teeth with single lingual groove and with both buccal and lingual groove.Conclusion:Using CBCT can accurately determine the configuration and orientation of the C-shaped root canal of mandibular second molar,which helps diagnose and treat complex C-shaped root canals.

关 键 词：下颌第二恒磨牙 C形根管 CBCT 

分 类 号：R781.05[医药卫生—口腔医学]