Endodontic Retreatment of A Mandibular Canine with Two Roots and Two Canals CBCT

Abstract

he mandibular canine is an important tooth in the dental arch. It's long and stable root gives it an advantage of being useful in giving support in a prosthesis due to its proprioceptive properties that guides the masticatory function and its role in occlusal guidance during the eccentric movements and posterior disocclusion.1 Mandibular canine is known for its one root and single canal. Variation may occur but is uncommon. The studies of Greene, Hess and Vertucci revealed 13%, 15% and 18% of two canals in a single root of mandibular canines respectively2, but the occurrence of two roots and even more than two canals is rare, ranging from 1 to 5%.3 Pécora JD et al also studied the internal anatomy, the direction and the number of roots of the mandibular canines. The study was done on 830 mandibular canines, and the results showed that 98.3% had only one root and of these 97.2% had one canal and one opening orifice, 4.9% two canals and one orifice, 1.2% two canals and two orifices. Two canals and two roots were present in only 1.7% of the cases.4 The aim of endodontic treatment is to eliminate the infection from the root canal and to prevent the reinfection.5 Knowledge of the root canal anatomy contributes to the success of the treatment. This article reports a clinical case of nonsurgical endodontic retreatment of mandibular canine with two roots and two canals.