Introduction: The aim of this surgical practice is to present a case report to describe a technique for sinus floor augmentation of an atrophic posterior maxilla by platelet-rich fibrin (PRF) has been used as a graft material with a one-step crestal approach (indirect sinus lift) where the residual bone is less than 7 mm in the atrophic posterior maxilla. Sinus floor elevation was performed with a crestal approach by using piezosurgery.
Case Report: A 38-year-old female with an atrophic right posterior maxilla was treated with sinus floor augmentation and immediate implant placement using PRF as the sole graft material in our implant clinic, maxillofacial department, Sulaimany teaching hospital prior to surgery the residual bone height was approximately 2–4 mm but six months after surgery, orthopantomogram show that the use of PRF as a graft material during sinus floor augmentation induces natural bone regeneration.
Conclusion: Herein, illustrate a minimally invasive procedure aimed at sinus floor elevation with immediate implant placement by crestal approach, PRF only is a safer and easy available simpler technique than the protocol graft materials and piezosurgery device to prevent Schneiderian membrane perforation.

Keywords: Immediate implants, Indirect sinus lift, Piezosurgery, Platelet-rich fibrin