Tomographic description of the root canal system of mandibular first premolars in Colombian population

Abstract

AbstractIntroductionThe success of endodontic treatment depends on a good knowledge of the root canal system. Aim: The purpose of this study was to describe the anatomical configuration of mandibular first premolars using cone‐beam computed tomography (CBCT) in a group of Colombian population according to Vertucci's classification, as well as the frequency of the presence of anatomical variations.Materials and MethodsA descriptive study was carried out using 100 mandibular first premolars to obtain CBCT images. The root length, root curvature, configuration of the root canals, number and location of the apical foramen, and shape of the entrance orifice to the root canal were analyzed.ResultsThe average length of the mandibular first premolars was 21.16 mm, and 33% showed different grades of the curvature. The most frequent configuration was type I (53%), and the least common were types VII and VIII (1%). Eighty‐three teeth had some anatomical variations, and the apical foramen was located laterally in 38%. There was a high incidence of oval canals 1C1 (67%), followed by 1A1 (27%).ConclusionA mixture of phenotypes leads to multiple anatomical variations in mandibular first premolars between individuals within a population. Herein, CBCT provided useful information about root canal anatomical variations of mandibular first premolars in Colombian population. Type I was the most frequently found configuration, and anatomical variations occurred more frequently in the middle third.