Success of an endodontic treatment relies on thorough understanding of tooth anatomy and ability to identify the different root canal configurations. One of the difficult root canal configuration that is frequently encounterd in mandibular second molars is C - shaped root canal. The canals are found to be connected by slit or web in C shaped root canal. Due to the presence of slit, fin and web ,shaping and cleaning of root canal space become difficult. This case series discuss about the root canal treatment of three different C-shaped canal configuration.

Keywords : C Shaped Canals, Ultrasonic Irrigation, Continuous Wave Compaction Obturation Technique