Management of permanent mandibular second premolar with extraneous canals: An endodontic challenge

An awareness and understanding of the presence of an additional root and unusual root canal morphology is essential as it determines the successful outcome of endodontic treatment. Aberrations in root canal anatomy are commonly occurring phenomena. The endodontic treatment of mandibular premolar with aberrant root and root canal configuration can be diagnostically and clinically challenging. This article presents a rare anatomic configuration and points to importance of expecting and searching for additional canals because knowledge of their existence would enable clinician to treat a case successfully that otherwise might end in failure.