Long-term Retrospective Study of Implants Placed after Sinus Floor Augmentation with Fresh-frozen homologous block

The aim of this study was to analyze and follow-up implants placed in the posterior maxillary regions previously grafted with homologous bone.

Materials and Methods: Forty-one grafts with homologous bone blocks were performed in maxillary sinuses, and 121 implants were placed in premolar and molar regions approximately 6 months after the grafts. Patients were followed up for periods varying from 12 to 124 months after rehabilitation.

Results: The results showed two implant failures, for a 98.3% success rate during the follow-up period.

Discussion: The implants placed had an average torque of 40 N-cm, regardless of the, design, diameter, and length of the implants used.

Conclusion: After following up on the implants placed in this study, we concluded that those placed in regions of the maxillary sinuses previously grafted with homologous bone blocks had high long-term success rates and met the functional masticatory requirements.


Livingstom Rubens Sousa Rocha, Antonio Carlos Aloise, Rafael de Mello Oliveira, Marcelo Lucchesi Teixeira, André Antonio Pelegrine, Luís Guilherme Scavone Macedo.

Initial panoramic radiograph of a sinus augmentation procedure, representative of the treatment protocol followed in the study
Fitting and fixation of the homogenous bone block
Full-thickness flap exposing bone crest
Filling of the cavity with homogenous particulate material and collagen membrane
Osteotomy on bone crest and detachment of the sinus membrane
Occlusal view of the maxilla after implant placement