Home Use of Dual-light Photodynamic Therapy for Chronic Periodontitis

Inclusion Criteria: * Periodontal disease stage I-III, according to criteria the American Academy of Periodontology (AAP) with at least 2 mm interdental CAL in the site of greatest loss. * Age of 18- 85 years * Presence of ≥20 teeth, including implants * Agreement to participate in the study and to sign a written consent form * Able to co-operate with the treatment protocol and avoid any other oral hygiene measures outside of the study protocol Exclusion Criteria: * Presence of major physical limitation or restriction that prohibit the hygiene procedures used in the study protocol * Removable major prosthesis or major orthodontic appliance * Pregnancy or lactation * Use of antibiotics within 2 weeks prior the study * A need for immediate antimicrobial treatment for periodontitis