Identification of root canals in maxillary molars using cone beam computed tomography / Identificação de canais radiculares nos molares superiores utilizando tomografia computadorizada

Introduction: Knowledge on variations in the root canal system is essential for a successful endodontic treatment. Objective: To present a case of identification of root canals in the maxillary left first molar,including the fourth root canal in the mesiobuccal root, using cone beam computed tomography (CBCT). Conclusion: The CBCT system proved to be relevant in providing important information on the root canal system for the planning of endodontic treatment in cases of persistent infection or access difficulties.