Endodontic management of mandibular permanent canine with two roots and two root canals using cone-beam computed tomography

A thorough understanding of the root canal systems of various human teeth can facilitate successful root canal treatment. The mandibular canines typically have one root and one canal. Mandibular canines with two roots are uncommon. This case report describes the examination of occlusion erosion and deep caries that had reached the pulp chamber in the mandibular canine of a 56-year-old healthy Saudi female patient referred to the endodontic clinic for evaluating the left mandibular canine. Radiographic evaluation revealed a widening of the periodontal ligament and periapical radiolucency and the presence of two roots. Two roots with two root canals were observed on cone-beam computed tomography. The tooth responded to a sensitivity test and was tender upon percussion and palpation. Symptomatic irreversible pulpitis and symptomatic apical periodontitis diagnosis were established, and nonsurgical root canal treatment was performed using a dental operating microscope. At follow-up, the patient’s symptoms had completely disappeared.