Abstract: Objective: To evaluate the relationship between occlusion design of implant-supported restorations and peri-implant tissues health. Methods: 203 implants were inserted into 154 patients with posterior teeth loss. The occlusal surfaces of implant-supported restorations were designed for cusp to circle sunken. Peri-implant bone loss, PD, GI, occlusal contact, and proximal contact were evaluated within 12 to 24 months follow-up. Results: In 12 to 24 months follow-up, the peri-implant bone loss was (0.86±0.21)mm and (1.05±0.30)mm, PD was (1.83±0.87)mm and (2.06±0.59)mm, respectively. There were no significant differences. There were 4 and 10 restorations with food impaction. GI was not significantly changed at different call back times. Conclusion: The occlusal surface of implant-supported restorations designed as cusp to circle sunken was useful to peri-implant tissues health.

Key words: Occlusal design, Implant-supported restorations, Peri-implant tissues health