INVESTIGATION OF ROOT CANAL MORPHOLOGIES AND SYMMETRY OF ANTERIOR AND PREMOLAR TEETH WITH CBCT IN A GROUP OF TURKISH POPULATIONS

Abstract

Objective The aim of the study was to examine the root canal morphology and symmetry of anterior and premolar teeth in a group of Turkish population using cone beam computed tomography. Methods The images of individuals who came to XXX University Faculty of Dentistry between 2015-2017 and had CBCT for various reasons were scanned retrospectively. A total of 3702 teeth, root numbers, root canal morphology and symmetry were examined. Vertucci classification was used to determine root canal morphologies. Results In the study, a total of 3702 upper and lower teeth of 185 male and 215 female patients between the ages of 16-79 (mean 35.2) were evaluated. Vertucci Type I (62.0-89.3%) canal shape was the highest in all teeth examined in the mandible. A high rate of Type III (32.2-32.4%) canal shape was observed in the incisors of the mandible. Type I canal shape was highest (93.5% 95.9%) in upper anterior teeth, each root had type I canal shape in all two-rooted maxillary first premolars, and Type IV canal (79.4%) was highest in single-rooted maxillary first premolars. A high rate of Type I (41.6%) and then Type IV (23.3%) canal shapes were seen in the upper second premolars. The lowest symmetry rate was 85.0% in teeth 31-41, the highest symmetry rate was seen in teeth 12-22 and 14-24 with 96.2%. In general, the symmetry ratio was lower in all lower teeth compared to upper teeth. Conclusion According to the literature, although the tooth groups have certain common features among themselves, it has been revealed that morphological differences can be found in the studies. In this study, it is aimed to contribute to these differences.