Diode Laser at Different Disinfection Parameters as Adjunctive to Initial-Periodontal-Therapy

Method: Thirty patients with CP were randomly divided into 3 parallel groups each comprising 10 individuals with at least 4 teeth having at least one approximal site with a probing depth (PD) of ≥ 5 mm and gingival index (GI) ≥ 2 in each quadrant. Groups of patients received : (1) Scaling and root planing (SRP) + diode laser with the lowest disinfection parameter(G1)(1.5W)(2)SRP+diode laser with the highest(2W)diode laser(G2):(3)SRP alone (G3) . The microbiological and clinical parameters were monitored at day 0 and day 90.

Result: At the end of the observation period, statistically significant improvements in all clinical parameters were observed within each group. Intergroup comparions of clinical findings as attachment gain, GI and PD reductions were found significant in favor of  G1 and G2 group compared to G3. Parallel to the clinical changes, all treatments reduced the number of total bacteria and proportions of obligately anaerobic microorganisms. Intergroup comparison of the mean differences of the proportions of obligately anaerobic microorganisms revealed statistically significance in favor of G1 and G2. Although no significant difference were detected between G1 and G2, greater reduction was observed in G2.

Conclusion: It can be concluded that diode laser when used as an adjunct to initial periodontal therapy  improved the clinical and microbiological results independent of the laser parameters for the disinfection purpose.