In vitro effect of photodynamic therapy with two photosensitizers on Streptococcus mutans load around metal and ceramic brackets bonded to enamel.

Background And Objectives: The inherent surface porosities of ceramic brackets can enhance bacterial plaque accumulation. This study assessed the in-vitro effect of photodynamic therapy (PDT) with two photosensitizers (PSs) on Streptococcus mutans (S. mutans) load around metal and ceramic brackets bonded to enamel.