INTRODUCTION :Chronic periodontitis is an infectious condition that causes inflammation in the teeth's supporting tissues, as well as attachment loss and bone loss. To prevent gingivitis and its progression into periodontitis, many chemotherapeutic drugs have been developed. Periodontitis can be managed with a variety of treatments, including both traditional and innovative therapies. The use of ozonated olive oil for periodontal infection control has been suggested in studies.. OBJECTIVE: The goal of this study was to see how well ozonated olive oil gel and chlorhexidine gel worked in conjunction with SRP to treat chronic periodontitis. MATERIALS AND METHOD : From the Department of Periodontics at Saveetha Dental College in Chennai, a total of 20 participants with localised chronic periodontitis (4-6mm) were chosen. With 10 subjects in each group, they were randomly assigned to the test or ozonated oil group (Group I) or the control or chlorhexidine gel group (Group II). At the beginning and after 21 days, clinical parameters such as probing depth and clinical attachment loss were assessed. RESULTS : There were statistically significant differences between the ozonated oil (Group I) and chlorhexidine gel (Group II) groups. The change of probing depth from 5.5 ± 0.68 to 2.2 ± 0.63 in case of test group and in control group it is from 5.5 ± 0.68 to 2.3 ± 0.69 (TABLE 1) and clinical attachment loss from 5.4 ± 0.65 to 3.5 ± 0.65 in case of test group and in control group it is from 5.3 ± 0.69 to 3.2 ± 0.63 (P 0.001 in both). However, the difference in probing depth and clinical attachment loss between Group I and Group II at the conclusion of the study period was not statistically significant. CONCLUSIONS: In individuals with chronic periodontitis, the therapeutic efficiency of chlorhexidine gel and ozonated oil, as well as scaling and root planing, was found to be comparable.

:Chlorhexidene gel. Chronic periodontitis, scaling and root planning, ozonated oil.