2021 年 42 巻 2 号 p. 98-101
Abstract : Purpose : The aim of this study was to assess the root and root canal morphology of maxillary anterior teeth in a Japanese population using dental cone-beam computed tomography (CBCT).
Materials and Methods : We analyzed the CBCT images of 263 maxillary central and 269 lateral incisors, and 283 canines from 145 patients. The following parameters were evaluated on CBCT : (1) number of roots and root canals, and (2) the classification of root canal configuration according to Vertucci's criteria.
Results : All the teeth examined were observed to be single rooted. The majority of the maxillary anterior teeth had a single canal (100% of the central incisors) ; in addition, two canals were identified in 3.0% of lateral incisors and 3.9% of canines. Type Ⅰ Vertucci's classification was the most prevalent canal configuration in the maxillary anterior teeth. Types Ⅲ and Ⅴ of Vertucci's classification were the most frequently observed canal configurations of the teeth with two canals.
Conclusion : All the maxillary central incisors displayed a single root canal whereas maxillary lateral incisors and canines demonstrated canal variations.