Clinical observation after maxillary sinus floor elevation and implanting in bone deficiency patients

DENG Tianzheng; LV Jing; YANG Jiefei; KE Jie

Abstract：Objective To evaluate the survival rate of dental implants and changes of peri-implant status after maxillary sinus lifting. Methods Patients were separated into experimental group and control group according to the fact whether maxillary sinus floor elevation was placed or not. In experimental group, patients were placed implants simultaneously after maxillary sinus floor elevation and bone graft. In control group, implants were placed directly without maxillary sinus lifting and bone graft. X ray was taken and probing pocket depth(PPD), bleeding on probing(BOP) were measured and plaque Index(PI) of all implants had been placed on the day of operation, 6, 12 and 36 months later. The survival rate of implants was counted. The actual bone hight(ABH) from implant root to the bottom of the maxillary sinus was calculated. Statistical analysis with SPSS 15.0 package was carried out. Results In experimental group, 55 patients were placed 76 implants. In control group, 55 patients were placed 70 implants. No significant differences were observed in the survival rates, PPD, BOP, PI in two groups(P<0.05). ABH changes showed obvious bone resorption(P<0.05). Conclusion This study showed maxillary sinus floor elevation was a good technique for patients with maxillary bone deficiency. High survival rate and healthy peri-implant status could be ensured.