Anti-microbial effect of probiotic versus silver nanoparticle irrigant

Disinfection of root canal system is a big challenge in the path of successful long-term treatment outcomes. 32 nonpathogenic extracted human teeth with single roots were collected for the study and were inoculated with Enterococus faecalis (<i>E. faecalis</i>) and later treated with silver nitrate solution and probiotic solution. The mean values of the <i>E. faecalis</i> count of probiotic irrigant (mean = 1.12) is lesser than that of silver nanoparticle irrigant (mean = 2.39). The probiotic irrigant had better antimicrobial efficacy than silver nanoparticle irrigant against <i>E. faecalis</i>.