上颌第二乳磨牙牙根及根管形态的CBCT研究  

Root and Canal Morphology of Primary Maxillary Second Molars Studied by CBCT

作　　者：彭雪珍 孔杰 张莉[1] 刘杰 王勤[1] PENG Xuezhen;KONG Jie;ZHANG Li;LIU Jie;WANG Qin(Department of Stomatology,Shenzhen Children’s Hospital,Shenzhen 518000,China)

机构地区：[1]深圳市儿童医院口腔科,广东深圳518000

出　　处：《口腔医学研究》2024年第9期816-819,共4页Journal of Oral Science Research

摘　　要：目的:通过对锥形束CT(cone beam computed tomography,CBCT)影像资料进行统计分析,研究上颌第二乳磨牙牙根和根管数目及分布情况。方法:对就诊于深圳市儿童医院口腔科144例4~8岁儿童的CBCT图像进行分析,统计上颌第二乳磨牙牙根和根管的数目及分布情况。应用SPSS 26.0软件比较上颌第二乳磨牙牙根数量、常见根管类型在性别间和左右侧间的分布差异。结果:纳入266颗上颌第二乳磨牙表现为3个(98.50%)或4个牙根(1.50%),牙根的数量在性别间(P=1.000)及左右侧间(P=0.123)的差异均无统计学意义;上颌第二乳磨牙根管类型分为7种,三根三根管占62.03%,三根四根管者占31.95%,这两种常见根管类型在性别(P=0.513)、左右侧(P=0.894)的差异无统计学意义。结论:上颌第二乳磨牙根管形态相当复杂,为了提高根管治疗的成功率,治疗前应掌握其常见根管类型。Objective:To analyze the root and canal morphology of primary maxillary second molars by using cone-beam computed tomography(CBCT)images.Methods:CBCT images of 144 Chinese children(aging from 4 to 8)in the Department of Stomatology,Shenzhen Children's Hospital were analyzed.The number of roots and morphology of canals were record.The data were statistically analyzed by software SPSS 26.0.Results:Ninety-eight point five percent of the teeth had three roots and one point five percent had four roots,respectively.There was no significant difference in the number of roots between genders(P=1.000)and between left and right sides(P=0.123).Of the subject enrolled,3 canals in 3 roots were found in 62.03%and 4 canals in 3 roots in 31.95%of the molars,respectively.There was no difference in the 2 major types of root canal between genders(P=0.513)and between left and right sides(P=0.894).Conclusion:The morphology of the root canals of maxillary second primary molars is very complex.It is necessary to master the common morphological types before root canal treatment to improve the success rate of root canal treatment.

关 键 词：上颌第二乳磨牙 锥形束CT 牙根 根管 

分 类 号：R781.05[医药卫生—口腔医学] R816.98[医药卫生—临床医学]