Minimally invasive endoscopic maxillary sinus lifting and immediate implant placement: A case report

Figure 3 Methodological illustration of platelet-rich fibrin establishment. A: Three platelet-rich fibrin (PRF) clots were compressed between sterile dry gauze; B: Established PRF membranes were filled into the primary elevated sinus floor; C: The sinus membrane was secondary up-elevated to reach a 12 mm total height; D: Endoscopic evaluation on PRF and sinus floor membranes by nasal breathing exercises; E: Installation of an implant (⌀ 4.8 mm × 12 mm, Straumann, Switzerland); F: Placement of a suitable healing cap.