Rehabilitation of the atrophic edentulous maxilla is complicated. Often the residual bone height is insufficient for implant placement due to crestal bone resorption and pneumatization of the sinus. The most common treatment has been a two-stage surgery using autogenous or synthetic grafting materials placed in the maxillary sinus before implant therapy. The sinus lift technique was introduced by Boyne et al. (1980) and much research has been done to evaluate this technique where the implants have been placed emerging into the sinus without grafting.
Lateral window approaches using various bone substitutes have been performed to overcome deficient bone volume on posterior maxillary ridge for decades. However some studies reported new bone formation in animal and human sinus with membrane elevation alone, resorbable gelatin sponge alone, venous blood alone and autologous fibrin gel with concentrated growth factors alone as alternatives to bone materials. According to many studies, bone substitutes may not be a prerequisite for sinus augmentation. The function of the elevated sinus membrane is controversial, but some studies reported that sinus membranes acted as periosteum and showed osteoinductive potential.
In this lecture we will make a short review about the material that is used for grafted sinus lifting and the effect of using CGF
( concentrated growth factors) from patient’s venous blood alone.)