Mandibular left first premolar with two roots: A morphological oddity

Thorough knowledge of the root canal morphology, appropriate assessment of the pulp chamber floor, and critical interpretation of radiographs are a prerequisite for successful root canal therapy. The possibility of additional root/canal should be considered even in teeth with a low frequency of abnormal root canal anatomy. This article reports on a case of mandibular first premolar with two roots, which was successfully treated with root canal therapy.