Abstract:Objective To explore the effect of maxillary sinus lifting on implant success rate and periodontal health index in oral implant restoration. Methods A retrospective analysis was performed on 80 patients who underwent oral implant restoration in the maxillary premolars or molar defects admitted to our hospital from June 2014 to January 2016. According to the treatment method, 40 patients in group A (planting repair with maxillary sinus lift) and 40 patients in group B were treated with conventional implant repair techniques. The implant retention rate at 1 year and 2 years after operation, bone resorption around the implant at different time points after surgery, periodontal plaque index, depth of probing, and sulcus bleeding index were compared. Results The bone resorption around the implants in group A was significantly higher than that in group B at 1 month, 6 months after surgery and 12 months after surgery . At 24 months after operation, there was no significant difference in bone resorption between implants in group A and group B . At 6 months after operation, the periodontal plaque index, depth of probing, and sulcus bleeding index of group A were significantly lower than those of group B . One year after operation, the retention rate of implants in group A and group B was not statistically significant . At 2 years after surgery, the implant retention rate of group A was 96.00% higher than that of group B (83.02%) . Conclusion The use of maxillary sinus lifting in oral implant restoration is beneficial to promote bone resorption around the implant, improve the retention rate of the implant, and reduce the damage of implant restoration to periodontal health.