A study of root canal morphology in maxillary third molars using cone-beam computed tomography / 口腔疾病防治

ABSTRACT

Objective@#This study investigated root canal morphology in maxillary third molars by CBCT to provide an anatomical guideline for clinical treatment.@*Methods@#CBCT images of 397 maxillary third molars were collected. The root canal morphology was analysed, including the number of roots and the type of canals.@*Results @# In 397 maxillary third molars, three roots were the most frequently type, accounting for 43.07% and the fused root teeth were the second, accounting for 40.30%. For the root canal type, three canals were the most common, accounting for 47.86%, followed by single canal, accounting for 28.21%. According to the Vertucci root canal classification, 89.6% of the root canals were typeⅠ, the rest were typeⅡ, typeⅢ, type Ⅴ, and other types of root canals which were difficult to deal with in clinical treatment.@*Conclusion @#The root canal morphology of the maxillary third molar is various and the root canal system was complicated.