RESUMO
A thorough knowledge of variable and complex tooth morphology, detailed exploration of the internal anatomy and underlying pathology, proper interpretation of radiographic images, conservative access to explore all the canals, thorough debridement and disinfection of canal system, three-dimensional seal by obturation, and good coronal seal by final restoration are essential steps in the management for a successful endodontic treatment outcome. Clinical management of rare case with extra canals in the lower anterior teeth and premolars had to undergo root canal therapy has been described. Referring to the hard-tissue repository of the human dental internal morphology, carefully interpreting multiangled radiography/cone-beam computed tomography, using tools such as magnifying loupes with illumination and ultrasonics, thermoplasticized gutta-percha system to obturate, are very helpful to the clinician can achieve this goal. This article describes and illustrates the management of a rare case with Vertucci's Type VIII canal anatomy in lower anterior teeth and premolars.