Abstract
Objective: The aim of the present in vitro study was to evaluate the efficacy of phthalocyanine dye in photodynamic therapy (PDT) as an adjunct to mechanical debridement in the management of peri-implantitis. Methods: S. aureus, F. nucleatum, and P. gingivalis were coated on titanium (Ti) discs and divided into control and test groups. In the control group, mechanical debridement + laser was performed, while in the test group, PDT with hydroxyaluminium phthalocyanine (AIPcOH) dye as photosensitizer was used. Bacterial colony counts and surface hardness were assessed post-operatively. Results: There was a significant difference in the bacterial count reduction at different time intervals in the test group (p=0.01) compared to the control group; no significant difference was observed in surface hardness (p=0.7). Conclusion: This present in vitro study concluded that PDT with AIPcOH dye was effective in eradicating S. aureus, F. nucleatum, and P. gingivalis on Ti discs. This study also concluded that PDT with a photosensitizer can be used as an adjunct in the management of peri-implantitis.
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