Doaa Mohamed Mohamed Sadony
Introduction: Streptococcus mutants are the main etiological agent for dental caries. Recently, laser diode and metallic nanoparticles has been introduced as a new method in bacterial decontamination. Objective & Aim: Present study was conducted with the aim of evaluating antimicrobial efficacy of silver (AgNPs) and gold nanoparticles (AuNPs) with and without diode laser (970nm, 1.5 watt,C.W mode) irradiation against experimentally inoculated Streptococcus Mutans bacteria in infected root dentin as a container.