Background: The present study was conducted to compare peri implant soft tissue and crystal bone status of dental implant placed in pre diabetic, diabetic and non diabetic individuals. Materials & Methods: 60 patients were divided into 3 groups. Group I were pre diabetic (HbA1c 5.5 to 6.4%), group II were patients with poorly controlled type 2 DM (HbA1c ≥ 6.5%) and group III were healthy individuals (HbA1c < 5.7%). In all patients, peri-implant GI, PD and plaque index (PI) were measured. Results: In group I, there were 12 males and 8 females, in group II were 10 males and 10 females and in group III, 9 males and 11 females. The mean plaque index in group I was 2.7 in group II was 3.1 and in group III was 0.5, gingival index was 2.9 in group I, 3.4 in group II and 0.6 in group III, probing depth was 4.1 in group I, 4.8 in group II and 1.2 in group III, crestal bone loss on mesial side was 3.6 mm in group I, 4.2 mm in group II and 0.7 mm in group III and crestal bone loss on distal side was 3.7 mm in group I, 4.0 mm in group II and 0.8 mm in group III. The difference was significant (P< 0.05). Conclusion: Chronic hyperglycemia increases the risk of peri-implant diseases, there a good glycaemic control is necessary to prevent it.