Abstract:

Abstract:Objective To evaluate the clinical effects of Ankylos implant system to restore the loss of single-tooth.Methods 90 cases with loss of single-tooth were selected and treated with  routinely two-stage surgery.When the patients presented with deficient alveolar ridge, guided bone regeneration (GBR), osteotome sinus floor elevation, lateral antrostomy surgery with simultaneous placement of implant were applied.They were restored with platinum ceramic crown.All the implants were followed up, and the records were kept about stability of the implant and abutment, the status of  surrounding soft tissue, sealability of implant abutment junction and the marginal bone lossing through X-ray checking, and satisfaction of the patients  to mastication and aspect of the restorations.The follow- up time was 1-2.5 years. Results Among the cases, one case had peri-implant inflammation, and one case had porcelain dropped.No loosening occurred in the other implants and abuments.Implant abutment junction was sealed well.The marginal bone loss 1 year after final restoration was less than 1 mm.Soft tissue surrounding implants was healthy.The satisfaction rate was 98.9%（89/90）.According to standard of implant success,88 cases were successful,the 2.5-year cumulative success rate was 97.8%, 2 cases failed, and the failure rate was 2.2 %. Conclusion A satisfactory treatment effects could be gotten by using Ankylos implant system to restore the loss of single-tooth.

Key words: implant system; , Ankylos; , single-tooth replacement