Abstract
Canine is the cornerstone of the mouth due to its position, which reflects its significance of mastication with incisors and premolars. Anomalous root canal morphology can be found in any tooth with different degrees. The unusual configuration of root canal system may lead to a lot of procedural errors during cleaning and shaping, and this, in turn. may increase the probability of root canal treatment failure. In most cases, mandibular canines have one root of a centrally located root canal and 15% of this type of tooth has two root canals.