Evolution of Instruments in Endodontics-Literature Review

The chemomechanical preparation is an essential part of the root canal therapy; it is the sum of auxiliary chemical substances and endodontic instruments suitable to achieve adequate cleaning, modeling and disinfection of the root canals. There is a huge evolution of manual and mechanized instruments in order to achieve the biological and technical objectives of the endodontic therapy. The intricate anatomy of the root canals makes cleaning and shaping difficult, which is why the introduction of nickel titanium alloy in the fabrication of endodontic files with its super elastic properties and memory effect has been transcendental to better address narrow, curved and difficult to shape canals. The purpose of this literature review article is to emphasize concepts and highlight positive and vulnerable aspects in the evolution of endodontic instruments.