Antimicrobial photodynamic therapy (A-PDT) is an adjunctive method to enhance root canal disinfection by targeting intracanal biofilm.
A systematic review included 27 studies that were analyzed for the effectiveness of PDT when combined with traditional endodontic procedures.
While PDT generally decreased bacterial viability in most studies, the lack of precise quantification and biases in the research limited the robustness of the conclusions.