Diabetes mellitus is a chronic metabolic disorder defined as an increase in sugar levels in the bloodstream brought on by either insufficient insulin secretion, resistance to insulin's effects, or both. All age groups are affected by the chronic condition known as diabetes mellitus. It is among the world's major causes of mortality and morbidity. Xerostomia, dental caries, periodontal disease, gingivitis, candidiasis, other oral infections, burning mouth syndrome, taste dysfunction, oral mucosal alterations, delayed wound healing, and localized osteitis are common oral manifestations of diabetes mellitus. Major complications impacting a patient's quality of life include oral complications in diabetic individuals. Long-term oral problems in these patients’ harm blood glucose regulation, making oral complications care and prevention important. The dental professional should be familiar with DM's oral manifestations to identify this disease complication. This article not only discusses the oral manifestations but also discusses management considerations in diabetic patients which will help future dental professionals in dental practice. This article aims to spread knowledge and awareness about the potential oral manifestations of diabetes mellitus and treatment considerations.