This dissertation aims at providing a Comprehensive review of rotary endodontics along with specific torque and speed of different endodontic motors available in the market and with emphasis on the behavioural properties of Ni-Ti and its mode of application. To improve the speed and efficiency of the treatment, recently there has been a resurgence of mechanized or automated system for both preparation and sealing of root canal system. Clinical evidence demonstrates that the root canal systems can be cleaned and shaped and obturated in three dimensions with a high degree of predictability...