Introduction and objective: Chronic periodontitis is the most common form of periodontal disease. Progression of the disease is due to high levels of pro-inflammatory cytokines. Statins are a class of lipid-lowering drugs that used for cardiovascular disease and stroke. Statins has potential anti-inflammatory effect by blocking intermediate metabolites of the mevalonate pathway. The aim of this study was to evaluate the influence of Lovastatin and Simvastatin in improve the parameters of chronic periodontitis in the population of Khorasan Razavi province. Methods and materials: 40 subjects with chronic periodontitis were selected and informed consent was obtained from participants. Participants were divided into control and experimental groups and we scaling for patients of both groups, then control group without high blood cholesterol and treatment of patients was done without statin drugs and in case groups, patients with blood cholesterol higher than 240 mg/dl with Lovastatin 20 mg/day during 3 month treated. Periodontal indices; such as probing pocket depth (PPD), GI, PI, CAL and bleeding on probing in patients with chronic periodontitis were measured by the examiner before and after treatment in the control group and the experimental group. Also this index were measured 3 months after treatment in both groups by the same person examiner as Blind and dataes were analyzed by statistical software. Results: In this study, Mean ± SD of age was 7.93 ± 43.8 in the control group and the experimental group was 7.72 ± 47.8 and of the 40 patients in the study, 18 were males and 22 were females. Our study showed that the index of GI, CAL, BOP and probing depth were significantly different between the two groups after the intervention (P less than 0.05) and only after the intervention PI index was not significantly different between the two groups (P>0.05). Conclusion: Our findings showed that statins may improve periodontal index in patient with periodontal disease. This is probably because that statins increase bone regeneration and reduced inflammatory parameters such as CRP, MMP-9, TNF-α and the intermediate products.

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Introduction: Periodontal disease is an inflammatory disease of the supporting tissues of the teeth caused by certain microorganisms and leads to progressive destruction of the periodontal ligament, alveolar bone with pocket formation or the recession, or both. Periodontal disease is usually based on clinical parameters diagnosed and recorded. Other advanced diagnostic techniques of periodontal disease is evaluation of host response, which includes the study of specific or non-specific mediators such as albumin, globulin and creatine phosphokinase enzyme by biochemical methods or immunological response that as part of the individual periodontal infections are known. Methods: The study population consisted of 30 patients. After observing isolation by cotton rolls, 50 to 100 ml GCF via 30 paper point and wetting with a height of 5 mm of the area with more involvement in terms of standard of patients with moderate periodontitis referred to Periodontics ward of Dental School in Mashhad pre-treatment phase 1 (scaling and root planning) and 4 weeks after the treatment is provided. Then changes in albumin, total protein, globulin and CPK enzyme activity in the GCF using biochemical kits measured. Result: In our study, mean CPK in patients with chronic periodontitis before treatment was further after treatment but not significantly different, but the average amount of albumin, total protein and globulin chronic periodontitis patients before treatment lesser than after treatment but there was no significant difference either. Conclusion: In this study, we showed that albumin, total protein and globulin was significantly increased after treatment of periodontitis patients.