Abstract: Objective： To investigate the clinical efficacy and safety of two implant systems for implant repair in dentition missing. Methods： Patients undergoing simple implant repair from January 2014 to December 2015 in the dental implant department of our hospital were divided into Dentium group(320 cases, 320 teeth) and Anthogyr group(64 cases, 64 teeth) according to the planting system used. The follow-up period was 1 years. The implant success rate, clinical efficacy, bone tissue absorption value, periodontal pocket depth, esthetics score and complications were observed. Results： There was no significant difference be- tween the two groups in the success rate, the total effective rate and the complication rate(P>0.05). Bone tissue absorption value, periodontal pocket depth, and PIS showed no significant difference between the two groups at each follow-up time(P>0.05). In the two groups, the bone resorption value and the depth of periodontal pocket decreased significantly with the prolongation of the follow-up time, and PIS increased significantly with the follow-up time (P<0.01). Conclusion： The clinical efficacy and safety of two im- plant systems in the absence of dentition were similar.

Key words: dentition deletion, oral cavity, implant repair, implant