Abstract: Objective: To measure the clinical effects of Ankylos implant in anterior aesthetic edentulous zone during 3-5 years and to discuss its application value. Methods: Between April 2008 and April 2010,200 patients underwent placement of Ankylos dental implants(325 implants) in Dental Implantation Centre of Yantai Stomatological Hospital, due to the telephone and address changed, 175 patients(280 implants) were chosen postoperative follow-up of 3 to 5 years to observe the success rate ,survival rate, marginal bone loss, gingival papilla index. Results: Observe time of 175 patients (280 implants) was 36-60 months,average time was 46.7 months,the implant success rate was 93%, the survival rate was 94.8%,the change of marginal bone loss not given bone-grafts was 0.98±0.45mm, the change of marginal bone loss given bone-graft was 0.98±0.45mm, In bone graft group,the change of marginal bone loss of Bio-oss and autogenous bone was 0.65±0.46mm, the change of maginal bone loss of the block autogenous bone and Bio-oss was 1.02±0.39mm. Conclusion: The clinical effect of Ankylos implant system in the anterior aesthetic edentulous zone is satisfying,the rate of implant success and surival is high,the loss of margin bone is low,the aesthetic effect is ideal.But because of the limiting condition of sample numbers and observe times,the related clinical reaserch need to be tested.

Key words: Ankylos implant, Marginal bone loss, Aesthetic zone