Background:Diabetes mellitus is one of the most serious diseases of metabolism. A number of oral conditions have been associated with diabetes mellitus, particularly in patients with poor glycaemic control. The aim of the study was to assess the periodontal status and to suggest preventive measures among type 2 diabetic patients. Material and methods:A cross sectional study was conducted among type 2 diabetic patients attending teaching hospital, Khammam. Demographic details were collected using a questionnaire and periodontal examination was performed using CPI Loss of attachment.Dataanalysis was done using descriptive statistics, chi- square test and one way ANOVA. Results:Majority (54.2%) of the study participants are males. CPI scores,48% hade code 2 and 46.5% had code 1 ( Loss of attachment of 4-5mm).A statistically significant association was found between glycated haemoglobin level and loss of attachment (p=0.017). Conclusion:It was concluded that the there is a significant association between diabetes mellitus and periodontal status of the study population. Regular follow up of dental problems and practice of various preventive measures is required.