The use of spiral CT in the detection and management of a permanent maxillary first molar with single root and single canal: A rare occurrence.

A sound knowledge of the normal tooth morphology and its numerous variations is essential to the success of endodontic therapy. While extra canals and lateral canals are routinely encountered and documented, there also exists the rare possibility of a fewer number of canals than normal. Early detection of such an occurrence is critical to the prevention of iatrogenic errors during endodontic treatment. The advent of spiral CT as a diagnostic tool serves as a much needed confirmation to understand the complex three dimensional anatomy of teeth. The aim of this case report is to highlight one such case reporting unusual morphology of the permanent maxillary first molar displaying single canal and single root, and the role of spiral CT in its detection and management. Permanent maxillary first molar, root canal anatomy, single root, single canal, Spiral CT.