To evaluate the success rate and satisfaction of implant repair in the elderly, and to explore the risk factors that may affect the success rate of implants.

In this study, elderly patients (≥60 years old) who were treated with implant restoration in the special clinic of Stomatology Hospital Affiliated to Nanjing Medical University from 2015 to 2018 were taken as the study objects. The average age of implant implantation was (67.47 ± 6.57) years old. There were 101 cases and 241 implants. They were followed up within 3 years after the completion of implant restoration. The success rate of implant and periodontal condition were recorded, and the risk factors affecting the success rate of implant were analyzed. At the same time, questionnaire survey was used to investigate patients′ satisfaction with implant restorations. Linear regression model and t-test were used to analyze the data.

The total success rate of implants was 96%, and the failure rate was 4% (10 implants) . During the 3-year follow-up, the bleeding index (BI) , plaque index (PLI) and gingival index (GI) were improved. The success rate of implants was related to many factors, especially the periodontal states, smoking degree and bite force of patients. The average marginal bone resorption of 231 implants at 3 months, 6 months, 1 year, 2 years and 3 years was (0.45 ± 0.61) , (0.51 ± 0.55) , (0.54 ± 0.48) , (0.60 ± 0.06) and (0.67 ± 0.25) mm. The average depth of periodontal pocket around the implant was (2.60 ± 1.42) mm, and the average absorption of marginal bone was (0.55 ± 0.16) mm. Linear regression analysis showed that r = -0.81, SE = 0.75, R² = 0.50, P = 0.78. The greater the depth of periodontal pocket around the implant, the more bone loss at the edge of the implant. The overall satisfaction of patients with implant repair was 9.20 ± 0.94.

The results show that, on the premise of meeting the implant indications, avoiding excessive bite force, reducing smoking intake and paying attention to periodontal maintenance, both the success rate of implant repair and the satisfaction for elderly patients with missing teeth were very high, and a good repair effect can be obtained.