rdcjournalRoyal Dental College JournalE-Volume 8 Issue 1MultidisciplinaryEnglishJanuary- DecemberNNY20251010Periodontology Peri-implant Diseases: Enhanced Antibacterial Photodynamic TherapyEnglishY6569Harish KumarVV1EnglishNSanthoshVC2EnglishYSaumiyaGopal2EnglishYSaradenduC3EnglishY10.67091/JRDC.2025.8115The extensive adoption of dental implants has greatly enhanced the functional and aesthetic rehabilitation of patients who are partially or completely edentulous. Nevertheless, the rising incidence of peri-implant diseases has become a significant clinical issue in the field of implant dentistry. Peri-implant mucositis and peri-implantitis are inflammatory disorders triggered by the accumulation of biofilm around dental implants, characterized by the progressive destruction of peri-implant tissues if not addressed. Traditional treatment methods, including mechanical debridement, antiseptic agents, and supplementary antibiotic therapy, frequently exhibit limited effectiveness due to the intricate surface morphology of implants and the resilience of dysbiotic biofilms. Antibacterial photodynamic therapy (aPDT) has been introduced as a non-invasive adjunctive treatment option that employs a photosensitizer activated by light of a specific wavelength to produce reactive oxygen species capable of selectively eliminating pathogenic microorganisms. Recent developments, particularly dual-light antibacterial photodynamic therapy that combines blue light and near-infrared light, have shown improved antimicrobial effectiveness and a notable decrease in inflammatory biomarkers. This review discusses the pathogenesis of peri-implant diseases, the limitations of conventional treatment approaches, the biological principles underlying aPDT, and the clinical evidence that supports the use of dual-light photodynamic therapy in the management and preservation of peri-implant health.EnglishAntibacterial photodynamic therapy, dental implants, Dual-light therapy, Peri-implantitis, Peri-implant mucositishttps://www.rdcjournal.org/abstract?id=310References16191.Berglundh T, Armitage G, Araujo MG, Avila-Ortiz G, Blanco J, Camargo PM, et al. Peri-implant diseases and conditions: Consensus report of workgroup 4 of the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions. J Clin Periodontol. 2018;45(Suppl 20):S286-S291. doi: 10.1111/jcpe.12957. 2.Renvert S, Persson GR, Pirih FQ, Camargo PM. Peri-implant health, peri-implant mucositis, and peri-implantitis: Case definitions and diagnostic considerations. 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