Aim of the study: To study Prognosis of dental implants in diabetic patients. Materials and methods: A total of 50 patients with poorly controlled diabetes were included in the study population. Participants were prescribed antibiotics for one week post-surgically, analgesics given as required. After a minimum of 4 months of healing, the participants received implant-supported fixed dental prostheses. Participants were seen 13 to 16 months after implant placement to evaluate implant complications and HbA1c levels, and were then recalled for a long-term follow up which occurred between 21 and 34 months post-surgery to assess implant survival and success by a single examiner. Results: The number of implants evaluated was 80. We observed that diabetic patients have high probability of implant failure. The number of failed implants increased with elevated HbA1c %. The results were found to be statistically significant. Conclusion: Poorly controlled diabetes mellitus can lead to poor dental implant health and implant failure within a short period of time. Keywords: Diabetes mellitus, implant, dental implant, HbA1c