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Abstract
Background and Objectives: Low intensity laser therapy (LILT) have been increasingly used in periodontal therapy. Studies suggest that LILT is able to stimulate soft tissue and hard tissue healing. The aim of this clinical trial was to evaluate the efficacy of coronally positioned flap (CAF) combined with low intensity laser therapy (LILT) compared to coronally positioned flap alone in the management of Class II furcation involvement by clinical and radio densito-metric analysis. Subjects and methods: All ten systemically healthy patients who were included in the study were assigned in a split mouth design clinical trial to receive (CAF) on class II furcation defects. One side received LILT while the other side did not. A diode laser with a wavelength of 850nm-980nm was used and energy output of 2W/ min was applied after CAF. Defects received 12 sessions of LILT carried out on 3 alternative days, one week after surgery (3 sessions per day), in each session, laser was applied for five minutes, with interval time of 30 minutes between successive sessions. Plaque index (PI), gingival index (GI), probing pocket depth (PD), clinical attachment level (CAL), tooth mobility, gingival margin level (GR), furcation horizontal probing depth (HPD) and width of keratinized gingiva (WKG) were recorded at baseline, 1, and 6 months after treatment. Radio densito-metric analysis was done for both sides at baseline and 6 months