Micro-CT analysis of the morphology of root canal systems of the mandibular third molars
YUAN Dong-ying
TANG Ying
GU Yong-chun
Abstract：AIM:To investigate the root canal anatomy of the madibular third molars.METHODS:76 madibular third molars were collected fromthe dental clinics.The teeth were scanned by a micro-CT scanner.After 3D reconstruction by Mimics 17.0 software,the tooth anatomy was examined in different views.The occurrence pattern of the pulp horns,different types of the canals and accessory canals were analyzed.RESULTS:Among the 76 third molars,22 teeth had a single root canal system (28.9％) and 18 had a C-shaped canal;52 molars (68.4％) had both a mesial and a distal separated root canal system,and they frequently had a simple type 1-1 canal (35 cases for the mesial,and 49 for the distal canal system);three-rooted forms were observed in 2 molars (2.6％).The frequency of accessory canals was 60.5％ (46/76).CONCLUSION:The root canal system of the madibular third molars may exhibit many variation forms.Whereas in most cases,the degree of the canal differentiation is at a low level.
Keywords：madibularthird molarsmorphologyroot canal systemsmicro-CT
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 521-524 )