An in Vitro Application of Diode Laser-Ozone Based Photodynamic Therapy for Microbial Inactivation
DOI: 10.18287/JBPE26.12.010304
Abstract
Staphylococcus aureus (S. aureus) can form biofilms that contribute to antibiotic-resistant infections. This study investigated the effectiveness of a combined red diode laser (665 nm) and ozone system for inactivating S. aureus biofilms. Biofilm samples were treated with ozone, laser irradiation, or a combination of both, and bacterial survival was evaluated after incubation. Statistical analysis was performed using a factorial ANOVA test. The results demonstrated that combined laser irradiation with a power density of 0.24 W/cm² and ozone treatment significantly enhanced biofilm inactivation compared to either treatment alone. The maximum biofilm reduction reached 94% with combined treatment during 40 s, compared to less than 80% reduction using laser irradiation alone. These findings indicate that red diode laser and ozone combination therapy is a promising approach for effectively reducing S. aureus biofilms, offering potential advantages for managing antibiotic-resistant infections.
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