Diabetes mellitus is a most common chronic disease which is characterized by elevated level of glucose in the blood. A number of oral diseases and disorders have been associated with it. Diabetic patient shows an increased risk of oral disorder and oral health related to quality of life (OHRQL) that might affect their management and also their treatment modalities. A good oral hygiene and regular dental visits are recommended to prevent and manage oral health problems. This study shows how diabetes mellitus affect the oral health and oral health related to quality of life. For a safe management of Diabetes Mellitus patients requires an effective communication among the health care providers. Dentists should know the techniques to diagnose, treat and prevent stomatological disorders in Diabetes Mellitus patients.

Keywords : Diabetes Mellitus, Oral Health, Quality Of Life, Gingivitis.