Clinical Comparison of Treatment Response Patterns Following Non-surgical Periodontal Therapy in Non-smokers and Passive Smokers with Chronic Periodontitis

Background and aims. smoking is a risk factor for periodontal disease. it has been documented that smoking impairs response to periodontal therapy. the aim of this study was clinical comparison of treatment response patterns following non-surgical periodontal therapy in non-smokers (ns) and passive smokers (ps) with chronic periodontitis. materials and methods. eighty adult patients (40 ns and 40 ps) with mild to moderate periodontitis were treated with full-mouth subgingival scaling and root planing. clinical parameters evaluated included probing depth, clinical attachment level, bleeding on probing, and plaque index, collected at baseline, and at 3- and 6-month intervals. results. in comparison with the baseline data, both groups showed statistically significant improvements in all the parameters after 3 and 6 months. full-mouth plaque and bleeding scores at 6 months did not demonstrate any significant differences between the two groups (p = 0.36 and p = 0.69, respectively). however, the inter-group differences after 6 months were statistically significant with regard to probing depth and clinical attachment level measurements (p = 0.001). conclusion. results demonstrated that response to non-surgical periodontal therapy in non-smokers is better than that in passive smokers.