Comparative evaluation of the antimicrobial efficacy of 5% sodium hypochlorite, subsonic activated solution and diode laser in elimination of enterococcus faecalis from the root canal

The outcome of root canal treatment is based on efficient disinfection of the root canal system and prevention of reinfection. Enterococcus faecalis has been found to be one of the predominant bacteria in root canal failure teeth. The bacteria appear to be highly resistant to available medicaments. Irrigants have been traditionally delivered using a syringe and a needle. The problem with this irrigation technique is inadequate replacement of the irrigant throughout the root canal system. Therefore various new devices like Endoactivator have been introduced. This device enhances hydrodynamic phenomenon by means of the subsonic activation of a passive smooth polymer tip. Another recent method to combat pathogens is the use of lasers. This study was aimed at comparing the antimicrobial efficacy of 5% sodium hypochlorite, subsonic activated solution and diode laser in elimination of Enterococcus faecalis from the root canal.