Pablo Rios; Carlos Arriagada; Cristian Rosas & Daniel Aracena

The objective of this study was to describe the morphology of the root canal system of the maxillary first molar in a Chilean population through Cone-Beam computed tomography (CBCT) examinations. A descriptive observational study was carried out in which the CBCT examinations of patients who were treated in a private maxillofacial radiology center during the period between January and December 2018 in Temuco, Chi- le, were used which were observed independently by two previously calibrated researchers. In this analysis 199 CBCT exams were observed. In the mesiobuccal root, Type II, I and IV morphologies predominated respectively, while in the distobuccal and palatal root, Type I morphology predominated. The MB2 canal was present in 62.3 % of cases, with a higher prevalence in young patients. Three separate roots and the presence of four canals were observed in most of the maxillary first molars of the patients in Temuco. A high frequency of the MB2 canal was determined in the root MB.

RIOS, P.; ARRIAGADA, C.; ROSAS, C. & ARACENA, D. Description of the morphology of the root canal system of the maxillary first molar using cone-beam computed tomography in a Chilean population. Int. J. Morphol., 41(2):477-481, 2023.