Root canal treatment of permanent mandibular first molar with six root canals: a rare case

The awareness of internal dental morphology is an excessively critical step in management of endodontic therapy. [1] The mandibular first molar, the earliest permanent tooth to erupt is assumed to be the tooth that mostly creates need for root canal treatment. The most common root canal morphology of the mandibular first molar is the presence of two canals in the mesial root and one or two canals in the distal root.[2] However, the literature indicates a number of case reports on the anatomic alterations and the variations related to the mandibular first molars. Amazingly, Reeh[3] reported a case with seven canals, involving four canals in the mesial root and three canals in the distal root. The knowledge of such anatomic variations of root and root canals is an essential aspect in managing the degree of success of root canal treatment. Without an efficient exploration, a canal could be left unprepared and inaccurate disinfection of root canal system is inevitable, so the endodontic therapy may result in failure.[4]