The mandibular molars are more prone to aberrations of canals. They include bifurcation and trifurcation of canals, fusion of roots, extreme canal curvatures and c-shaped canals which makes it difcult to diagnose and manage. The failure to treat them leads to re-infection and persistence of infection in the tooth. Hence, it is of utmost importance for the clinician to know the morphologic variations. The present case series aims to give a clinical insight of such aberrations. The ten cases presents with mandibular second molar with “c” shaped root canal system, which was diagnosed with Radiovisiography. The cases were treated endodontically and successfully managed