Root canal treatment of a mandibular second premolar with unusual anatomy: A rare case report

The mandibular premolars, typically, present with a single root and single root canal. However, several studies have shown greater diversities in the root canal system of mandibular premolars. Vertucci found two canals at the apex in 25.5% and three canals at the apex in 0.5% of the cases of 400 investigated premolars. The introduction of magnification in dentistry and the use of cone-beam computed tomography have greatly improved the success of root canal treatment. The present case report presents a case of successful root canal treatment of a mandibular second premolar with a single root canal that trifurcates and exits as three canals at the apex.