['To discuss the risk and strategy of dental implantation in patients with periodontal disease and type 2 diabetes.', 'Retrospective analysis was performed of dental implantation results in 248 patients with periodontal disease and type 2 diabetes from 2000 to 2008. The survival rate was evaluated and the data statistically analyzed.', 'The Nobel implant system and CDIC implant system were used. The operation applied flapless and bone expanding techniques. A total of 1190 implants were inserted (333 Nobel Replace implants and 857 CDIC implants). 0.5% (6 implants) lost during the first 6 months healing stage. The 1-year, 5-year and 8-year survival rate were 98.4% (1165/1184), 95.3% (487/511) and 89.2% (91/102) respectively.'] Do [ Dental implant restoration in 248 patients with periodontal disease and type 2 diabetes ]?