(6.6, 5.6, 4.5, 4.0, 3.6 and 3.1mm) and (6.6, 5.8. 4.8, 4.2, 3.9 and 3.5mm), PI were (2.7, 1.7, 1.2, 0.8, 0.4 and 0.2) and (2.7, 1.9, 1.4, 1.1, 0.9 ad 0.6), and BOP were (95, 66.7, 40,25, 11.7 and 1.6%) and (96.7, 75, 63,3, 45, 31.7 and 25%) for SG and CG respectively. The mean prevalence of Colony Forming Units (CFUs)/ml were (500, 430, 335, 205, 80 and 15) and (500, 455, 400, 325, 255 and 165) for SG and CG respectively. DL irradiation had revealed antimicrobial effects and reduction of inflammation, which supported healing periodontal pockets through microbial elimination than old methods.