Resumen de Micro-CT study of the root canal anatomy of maxillary canines
Hugo Plascencia, Álvaro Cruz, Claudia Azucena Palafox Sánchez, Ana Díaz Haro, Claudia Lopez, Clovis Monteiro Bramante, Bertram I. Moldauer, Ronald Ordinola Zapata
Background: This study aimed to describe the anatomy of maxillary canines from a Western Mexican sub-population using micro-computed tomography (micro-CT).
Material and methods: Maxillary canines (n=32) were scanned at 19.6μm voxel resolution. Number and location of canals, the distance between the cemento-enamel junction and apex, occurrence of accessory and lateral canals, presence of oval canals, number of foraminas as well as two- (area, perimeter, roundness, aspect ratio, major and minor diameters) and three-dimensional (volume, surface area, and SMI) analysis were performed. Data of two- dimensional analyses at 5 different apical levels was statistically compared using Kruskal-Wallis tests (α=0.05).
Results: Overall, 31 specimens had one root with a main canal (Vertucci type I). Mean distance from the apex to the cemento-enamel junction was 16.32±2.27. Apical foraminas were present in 14 specimens (43.75%). No statistical differences were found in the two-dimensional analyses between the foramen and the 1 and 2mm apical levels ( P >0.05).
Conclusions: Maxillary canines presenting one root canal were present in a high percentage of cases (96%). The prevalence of long oval canals was <12% at the apical third and at least 37% of the sample showed more than one point of exit in the last apical 3mm
