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PURPOSE Cigarette smoking is a major risk factor in periodontal diseases. The pathogenesis of periodontal diseases may be affected by alterations of the inflammatory response by smoke. Nitric oxide (NO) is a gaseous, colorless, highly reactive, short-lived free radical with a pivotal role in the regulation of various physiological and pathological(More)
Free radicals are generated as byproduct of our body metabolism, and their adverse effect on normal functioning of our body is prevented by body's own antioxidant machinery. Any perturbation in the defense mechanism of antioxidants inside body, its abnormal production or its induction from environment to our body lead to serious threats and is responsible(More)
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