Management of mandibular second molar with single root and single Canal using self-adjusting file and thermo plasticized gutta Percha – two case reports: a rare occurrence

Aim: To present two cases of mandibular second molars with a single root and single canal which was diagnosed and treated successfully. The variability of root canal morphology of multirooted teeth represents a continuous challenge to endodontic diagnosis and therapeutics. Variations of root canal systems may not be only in the form of extra canals. Clinicians should be aware that there is a possibility of the existence of lesser numbers of roots and root canals than that encountered with normal root canal anatomy. Mandibular molars with single roots and single canals are one of the variations encountered. These teeth with large single canals pose a challenge in thorough debridement of the root canal necessitating the use of adjunctive aids. This case report present two rare cases of mandibular second molars with a single root and a single root canal, which was managed successfully using the Self Adjusting file system and thermoplasticized gutta percha under surgical operating microscope.