Análise morfológica de primeiros molares superiores por meio de tomografia computadorizada de feixe cônico em uma população brasileira

Abstract

Root canal configuration of upper human permanent first molars of a Brazilian population by Dental Cone-Beam Computed Tomography (CBCT): An In vivo study. This study aimed to evaluate the morphology of roots and root canals of the upper first molars of a Brazilian subpopulation through in vivo cone beam computed tomographic (CBCT) imaging. Methods: A total of 439 teeth from 336 patients who underwent CBCT examinations for planning and diagnosis for various purposes were selected for the study. Upper first molars without endodontic treatment and complete rhizogenesis were included in the study. The number of roots, number of canals and their configuration were recorded according to the Vertucci classification, as well as the presence of pulp nodules and root fusions. Results: The most common morphology was three roots and 4 canals. Of the 439 upper first molars analyzed, 65.3% were classified as being Vertucci type II, more prevalent in the mesiobuccal root (MB); the distobuccal (DB) and palatal (P) roots mainly belonged to type I, 99.0% and 99.3%, respectively. Pulp nodules were present in 25,0% of the analyzed teeth. A total of 11.2% of the teeth presented some root fusion. Conclusions: When analyzing root and root morphology of the first maxillary molars by CBCT, three-dimensional analyses identified the presence of curvatures, lacerations, pulp nodules and supernumerary canals, demonstrating that this diagnostic tool improves the knowledge of dental anatomy and consequently assists endodontic therapy. Furthermore, we observed a positive correlation between the morphology of the first maxillary molars and the ethnic groups to which these individuals belonged.