The success of endodontic treatment depends on the eradication of microbes from the root canal system and prevention of reinfection. The main goal of instrumentation is to facilitate effective irrigation, disinfection and filling. Several studies using advanced techniques such as micro computed tomography (CT) scanning have demonstrated that proportionally large areas of root canal remain untouched by the instruments, emphasizing the importance of chemical means of cleaning and disinfecting all areas of the root canal.Irrigants have traditionally been delivered into the root canal space using syringes and metal needles of different size and tip design. Research have shown that this classical approach typically results in ineffective irrigation, particularly in peripheral areas such as anastomosis between canals, fins, and the most apical part of the main root canal. Therefore, several mechanical devices should be used to improve the penetration and effectiveness of irrigation.