Abstract: Objective: To compare the imaging differences of immediate implant healing between type 2 diabetes mellitus and control group. Methods: Ten patients with diabetes mellitus and ten patients without diabetes mellitus were selected as controls. Under the condition of controlling blood sugar in normal range during perioperative period, single tooth was implanted immediately. CBCT was used to observe the difference of bone mineral density (BMD) in the neck, middle and apex of implant and the width of transmission area around implant in diabetic group and control group immediately and three months after operation. Results: There was no significant difference in bone mineral density between diabetes mellitus group and control group(F=1.37, P=0.24>0.05). The results of variance analysis of transmissive zone width around implants showed that there was statistical significance(F=21.86, P<0.01). The mean width of the transmission zone in the neck of the diabetic group(1.27+1.34mm) was higher than that of the non-diabetic control group(0.51+0.47mm). Conclusion: The bone mineral density around immediate implants in type 2 diabetes mellitus patients was similar to that in control group when blood sugar was controlled in normal range during perioperative period. However, the formation of new bone in neck of implants in type 2 diabetes mellitus patients was slow, and the long-term effect needed to be further observed.

Key words: immediate implant, Type 2 diabetes mellitus, osseointegration, bone defect