The specialty of Endodontics has evolved and changed over the years like many other dental and medical specialties. Refinement and modification of instruments enabled clinicians to enhance their skill in performing endodontic procedures.(1) The principles of root canal preparation are to remove all organic debris and microorganisms from the root canal system, and to shape the walls of the root canal to facilitate that cleaning and the subsequent obturation of the entire root canal space. However, a tooth root rarely contains a single simple root canal. Accessory canals, lateral canals, fins, anastomoses between Canals and an apical delta all contribute to the root canal system; the majority of these anatomical features are not accessible to instrumentation.