Noticeable Bone Regeneration beyond the Implant Tip after A Crestal Approach Sinus Lift Using Only Platelet Rich Fibrin: A Report of Two Cases

Purpose: To present two cases with noticeable bone gain beyond the implant tip after a crestal approach sinus lift using PRF as the sole grafting material. Materials and Methods: Two PRFs were packed into each implant hole to elevate the Schneiderian membrane and sandblasted acid-etched implants were inserted simultaneously. Results: The follow-up panoramic radiographs and CTs showed that the new sinus floor was above the implant tip and the cortical outline was clear. Conclusion: The findings from both cases suggest that the PRF can promote noticeable bone gain in the crestal approach sinus lift procedure. A greater number of patients and a longer follow-up period are needed to investigate the reliability of this technique.