*"All-on-4"种植即刻修复技术的临床应用研究

Objective To evaluate the preliminary clinical results of application of All-on-4 immediate junction in edentulous patients. Methods Twenty nine edentulous patients with 140 immediately loaded implants supporting fixed complete-arch all-acrylic prostheses from April 2008 to October 2009 in Peking University School of Stomatology were included. The implant-supported fixed complete-arch all-acrylic prostheses were delivery on the operation day. At time of abutments connection, a panoramic radiograph was taken. And radiographic assessment of the marginal bone level was performed in every 2 months. Clinical observe items included marginal bone level, integrity of the restoration,survival of the implants and degree of satisfaction of the patients. Results A total of 140 implants were immediate loading. Eight implants were lost during 6-8 weeks after immediate loading, giving survival rate of 94. 3% . The marginal bone level was (0. 8 ± 0.4) mm . The All patients were satisfied with the clinical results. Conclusions The data and the experience described in this study indicate that All-on-four immediate function technique can be a predictable technique for edentulous patients. Further study is needed to determine the long-term result of the technology.

Clinical study of "All-on-4" implant immediate function in edentulous patients