临床口腔医学杂志2026，Vol.42Issue(6)：341-345,5.DOI:10.3969/j.issn.1003-1634.2026.06.006
华东地区人群下颌第一前磨牙牙根及根管形态的CBCT研究
A CBCT study on the root and root canal morphology of the mandibular first premolar of the population in East China
摘要
Abstract
Objective:To investigate the morphological characteristics of root and root canal of 1873 mandibular first premolars by cone-beam computed tomography(CBCT).Methods:CBCT images of patients treated in Xuhui District Stoma-tological Hospital of Shanghai in 2025 were selected for a retrospective study.The number of roots,root canal configuration and radicular groove distribution of 1873 mandibular first premolars from 1014 patients were analyzed statistically based on imaging data.Results:The results showed that the number of roots of the mandibular first premolar ranged from 1 to 3,with a single root having the highest incidence(99.31％).The root canal morphology was mainly Type Ⅰ(88.68％),and the inci-dence of complex root canal morphology was relatively high for Type Ⅴ root canals(8.54％).The incidence of root surface grooves in complex root canal morphology could reach 70.28％.The probability of complex root canals in males was signifi-cantly higher than that in females(P<0.05).Conclusion:The root and root canal morphology of mandibular first premolars are diverse,with the total incidence of complex root canals being approximately 11.32％,among which Type Ⅴ root canal ranks the highest at 8.54％.When performing root canal treatment in clinical practice,it is necessary to fully integrate the in-formation from CBCT imaging to formulate a more targeted clinical guidance plan.关键词
锥形束CT/下颌第一前磨牙/根管分型/根面沟Key words
Cone-beam CT(CBCT)/Mandibular first premolar/Root canal configuration/Radicular groove分类
医药卫生引用本文复制引用
宋晨成,曹颖,叶茂..华东地区人群下颌第一前磨牙牙根及根管形态的CBCT研究[J].临床口腔医学杂志,2026,42(6):341-345,5.基金项目
徐汇区牙病防治所医学科研项目(SHXYF202308,SHXYF202403) （SHXYF202308,SHXYF202403）
