Perplexing anatomic variation in maxillary first premolar with three roots and three root canals: a case report

The maxillary first premolar, which is said to be a metamorphic tooth between incisors and molars, normally has two roots with two root canals. But, an endodontist must always be expecting aberrant anatomical variations as these teeth may have a third canal present, which is easy to miss if the tooth anatomy is not understood and the canals are not searched meticulously. This article presents one such anatomical variation in maxillary first premolar, which presented with three roots and three root canals.