Efficacy of Adjunctive At-Home Photodynamic Therapy (aPDT) in the Treatment of Peri-Implant Mucositis

Inclusion Criteria: * Presence of at least 20 teeth within the oral cavity. * Diagnosis of peri-implant mucositis: bleeding or suppuration upon gentle probing with or without increased probing depth compared to previous evaluations, and no bone loss beyond the changes in the crestal bone level resulting from initial bone remodeling. * Patients willing and able to provide written informed consent. Exclusion Criteria: * Pregnancy. * Patients with a history of periodontitis. * Use of medications that could affect soft tissues within the past 6 months (e.g., antibiotics, anti-inflammatories, anticonvulsants, immunosuppressants, or calcium channel blockers, including doxycycline and bisphosphonates). * Allergy to the photosensitizer. * Patients with removable major prostheses or orthodontic appliances. * Patients with untreated carious lesions.