Configuration and Influencing Factors of C-shaped Root Canal in Mandibular Second Molars by CBCT
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 ob-tained.The incidence of symmetry,the root groove,and canal morphology in different cross sections were ana-lyzed.Results:The incidence of symmetry was 80.0％.Four hundred and six mandibular second molars with C-shaped 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 be-tween males and females(P＜0.05).There was statistical difference in the root canal configuration of three cross-sections between 18-25 and 26-50 age groups(P＜0.05).There was statistical difference in the root canal configu-ration 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.
NETL
NSTL
万方数据
维普
