Diode Laser and SRP in Chronic Periodontitis

Photoablation of the gingival epithelium was performed with at 810 nm diode laser (1 W output power, continuous wave mode, 66.7 J/cm2, a 0.6 mm optical fiber). SRP was performed using curettes. The periodontal tissues and the dental root were rinsed with the photosensitizer agent methylene blue (0.3% w/v in water). After 5 min., the treated areas were irradiated with at 635 nm diode laser (100 mW output power, continuous wave mode, 0.6 mm optic fiber). The photodynamic treatment was repeated once weekly until normalization of the cytodiagnostic parameters (range: 4-10 applications).

Sham-treatment was similar to the previously described treatment but with switched off laser, followed by scaling and root planing