تقييم استخدام الفبرين الغني بالصفيحات في رفع قاع الجيب الفكي بالتصوير المقطعي المحوسب

Background & Objective: Maxillary sinus augmentation is frequently necessary before placement of dental implants in the posterior maxilla. Besides autogenous bone graft, various bone substitutes have been used widely to augment the maxillary sinus,successful bone augmentation in the maxillary sinus without bone grafting and osseointegration of implants have been reported in several studies, recently, successful bone reformation in the sinus using autologous platelet-rich fibrin (PRF) concentrateas an alternative to bone grafting has been reported. The aim of this study: was to assess the useof PRF clots and membranes as the sole filling material during a lateral sinus lift with immediate implantation using radiologic exam (cone beam ct). Material& methods:22 sinus elevations with simultaneous implantation were performed on 17 patients (10 female and 7 male) usingPRF as the sole filling biomaterial. For each patient, a one week exam and a 6- month radiologic exam were performed with (cone beam c.t) to evaluate the final bone gain around the implants after6 months via T-test. Results: No implant was lost during this period, and all implants were inserted in residual bone height between4.3 and 8.35mm (mean 6.39 mm). The final bone gain after six months was between 9.1 and12.7 mm (10.96 mm),so there was very siginficint difference inbone gain (p<0.05). Conclusions: From a radiologic analyzing at 6 months after surgery, the use of PRF as sole filling material during simultaneous sinus-lift and implantation seems to be a simple and inexpensive and reliable surgical option promoting natural bone regeneration