The treatment of root canals can prove to be incredibly challenging for an endodontist. The anatomy is complex, and the curvatures can be severe, so there could possibly be complex forms of curvature. The objectives of this thesis are to discuss in detail, the various steps in the therapy of curved root canals, the materials used in each step, and the techniques that can be used to achieve the goals of the steps being discussed. This thesis aims to educate both readers and dentists on the best way to manage the challenging clinical scenarios of curved root canals whilst carrying out root canal treatment.