Aim of the work. The aim of the present study is to assess the implant osseointegration, as well as the course of bone regeneration and healing process, thanks to the sinus lift procedure and by using PRF as a filling material, in association with Bio-Oss.
Materials and methods. 23 patients were involved in this study, requiring maxillary sinus lift to place implants in the posterior maxillary region. As we selected cases in which the height of the residual bone was superior to 5 mm, we opted for the surgical procedure of one-stage sinus lift (implant insertion occured concurrently with sinus lift, and the healing and integration time was 6-9 months). Before inserting the implant, a small quantity of filling material was placed in the cavity. For this purpose, the bone fragment stored in saline solution was employed; after being ground, it was mixed with Bio-Oss and PRF.
Results. All patients reported no pain to percussion, no sign of tissue suffering to the soft peri-implant tissues, the presence of an optimal primary stability of the inserted implants and the increase in the peri-implant bone density.
Conclusions. In all the cases included in this protocol, the Authors observed a successful implant-prosthetic rehabilitation. The Authors consider it opportune to conclude by stressing the need to continue this study on a wider cohort of patients, and to carry out large-scale analyses which could provide statistically significant criteria about the success of this procedure.
KEY WORDS
Sinus Lift; PRF; Bio-Oss; One-staged Procedure.
 FIGURE 1: Preoperative X-ray/OPT of one of the patients included in the study group |
 FIGURE 2: Surgical phase: opening of bony breach and removal of the membrane |
 FIGURE 3: Surgical phase: a micromotor with final drill |
 FIGURE 4: A detail of the endoral radiography, 6 months after the Sinus Lift |
 FIGURE 5: A detail showing the taking of dental impressions, 6 months later, before applying the transfert |
 FIGURE 6: A detail of the endoral radiography, 6 months later, showing the taking of dental impressions with transfert applied on the fixture |
 FIGURE 7: Final X-ray/OPT performed 6 months after the prosthetic phase |
 FIGURE 8: Final CAT Dentascan of the maxilla after the Sinus-Lift procedure, performed 6 months after the prosthetic phase |
 FIGURE 9: Preoperative X-ray/OPT of another patients included in the study group |
 FIGURE 10: Preoperative CAT Dentascan of the maxilla |
 FIGURE 11: Surgical phase: opening of bony breach and removal of the membrane, according to ?TATUM?s Technique? 43 |
 FIGURE 12: A cup containing Bio-Oss mixed with PRF |
 FIGURE 13: Application of the mixture of Bio-Oss and PRF in the surgical breach |
 FIGURE 14: Preoperative X-ray/OPT of another patients included in the study group |
 FIGURE 15: Preoperative CAT Dentascan of the maxilla |
 FIGURE 16: Surgical phase: opening of bony breach and removal of the membrane, according to ?TATUM?s Technique? 43 |
 FIGURE 17: Surgical phase: fixture insertion into the implant site |
 FIGURE 18: OPALINE glass bowl containing PRF, before mixing with Bio-Oss |
 FIGURE 19: Surgical phase: filling of the atrophic sinus with Bio-Oss mixed with PRF |
 FIGURE 20: PRF membrane used to cover the vestibular breach, according to ?TATUM?s Technique? 43 |
 FIGURE 21: Final X-ray/OPT performed 6 months later |