Background:Periodontitis is a multifactorial inflammatory disease that affects the supporting structures of the teeth leading to progressive alveolar bone loss. If left untreated it can result in tooth loss.Various studies have reported the incidence of periodontitis to be more in patients with diabetes mellitus as compared to their healthy counterparts. routine periodontal evaluations in patients with diabetes mellitus is important both oral health and glycemic control.Materials and methods: This was a comparative observational study of 120 individuals out of which 60 were having type 2 diabetes mellitus (cases group) and 60 healthy individuals (control group). Gender distribution and age was compared in both the groups. Mean random blood sugar levels and HBA1C levels were also compared. In both the groups the patients were divided into those having healthy periodontal tissue, early periodontal disease, moderate periodontal disease and severe periodontal disease (as per Fernandez classification). Prevalence of periodontal disease in both the groups was compared. p value less than 0.05 was taken as statistically significant.Results:Gender Distribution was found to be comparable in both the groups with no statistically significant difference in gender distribution amongst both the groups. The mean age of cases in group D and group H was found to be 42.64 +/- 13.22 and 40.92 +/- 13.98 years respectively. The mean random blood sugar levels as well as mean HbA1c levels were high in group D as compared to Group H and the difference was found to be statistically highly significant (P<0.0001). The incidence of periodontal disease was more common in patients with diabetes mellitus as compared to their healthy counterparts and the difference was found to be statistically highly significant (P=0.0001).Conclusion:Incidence of periodontitis is more in patients with Type2 Diabetes Mellitus as compared to the healthy individuals, therefore routine periodontal evaluations in patients with diabetes mellitus is important for both oral health as well as glycemic control.