Evaluation of Root and Root Canal Morphologies of Maxillary Anterior Teeth Using Cone-Beam Computed Tomography in a Radiography Center in Qazvin

One of the main reasons for the failure of endodontic therapy is lack of knowledge about the anatomy and morphology of roots and root canals. Therefore this study was designed to evaluate the root and root canal morphologies of permanent maxillary incisors in an Iranian population using CBCT images.
A total of 83 CBCT images from the 2014 archives of a radiology center were evaluated with the use of Romexis viewer software program. The images were evaluated simultaneously by one radiologist and one endodontist in three dimensions and data were recorded. The variables evaluated in these images included the number and morphology of the roots, the number of canals in each root, and the curvature of the roots and canals in the buccolingual and mesiodistal directions. The subjects’ demographic data were extracted from the patient files. Data was analyzed using and chi-squared and Fisher’s tests (α A total of 115 central incisors, 114 lateral incisors and 115 canines were evaluated; 33.2% of the central incisors belonged to males and 67.8% to females, with 99.1% of the root canals being Type I and 0.9% being Type V. Of all the lateral incisors evaluated, 31.6% belonged to males and 68.4% to females, with 98.2% being type I and 1.8% being Type V. Finally, of all the canines evaluated 29.6% exhibited Type I and 2.6% exhibited Type V root canal morphology and 0.9% (one tooth) had two root, both being type V based on Vertucci classification.
In each tooth type, at least one tooth had a different and uncommon morphology. There was no difference in root canal morphology between males and females.