Abstract
Periodontitis is an inflammatory disease in which periodontal tissues are damaged as a result of an imbalance in the oxidant/antioxidant systems. Melatonin is one hormone that controls circadian rhythms and is also an antioxidant and immune modulator. The present study was aimed to evaluate the effect of scaling and root planing (SRP) on salivary melatonin levels (SM) in patients with periodontal disease. A single-center clinical trial was conducted to evaluate the effect of SRP on SM levels in patients with periodontal disease. Forty-five participants of age 30-60 years were equally divided into three groups: 15 healthy participants, 15 participants with gingivitis, and 15 participants with periodontitis. Unstimulated salivary samples were collected from all the participants at baseline and 1 month after SRP from participants of gingivitis and periodontitis group and SM levels were determined by commercially available ELISA kit. Group comparisons were made using t-test. The level of significance was set at a P < 0.05 for all tests. SM levels were significantly lower in the chronic periodontitis group. There was a significant improvement in clinical parameters and SM levels in both chronic periodontitis and gingivitis groups after SRP. This study determined that there is a negative correlation between SM levels and the severity of periodontal disease and showed a significant increase in SM levels after SRP, suggesting that melatonin might have a protective role against periodontal disease and can be considered as an effective biomarker.
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