Evaluating the efficacy of cavity disinfection using methylene blue dye with 660-nm diode laser on primary molars: An in vivo study.

Background And Objectives: The purpose of this study was to evaluate the antimicrobial activity of methylene blue dye with 660-nm diode laser in cavity disinfection and to compare the total bacterial count in dentinal samples preexcavation, postexcavation, and postdisinfection. The study design was experimental in vivo.

Materials And Methods: Fifteen children aged 5-12 years with 15 primary molars requiring atraumatic restorative treatment (ART) were selected.