Abstract: Objective: To study the clinical effect of maxillary sinus floor lift with CGF in the posterior maxillary region after implant restoration. Methods: After maxillary sinus floor lift, 120 cases were collected during March 2013 to December 2016, whose vertical bone height was insufficient. The maxillary sinus floor lift with CGF was used to promote bone height. 169 implants were implanted simultaneously and 14 cases were delayed. The upper restorations were completed after 6 to 8 months. The numbers of Straumann and Bego implants are 136 and 33, respectively. All cases were followed up for 3 to 4 years. Results: Bone height was increased in the posterior maxillary region. The implants achieved good osseointergration. No implant was loose or falling down. Clinical effect was satisfied. Conclusion: Sinus floor elevation with CGF and simultaneously implantation achieved remarkable clinical effectiveness in the posterior maxillary region. CGF could promote new bone formation, and could be a reliable auxiliary technology for bone augmentation.

Key words: Maxillary sinus elevation, Simultaneous implant, Bone deficiency, CGF