In the severely atrophic maxilla, prosthetic rehabilitation is difficult. However, rehabilitation using osseointegrated implants with bone grafting can resolve this problem. Among the various methods of bone graft to the maxilla, sinus lift is commonly used.
This report presents two cases of oral rehabilitation using osseointegrated implants with the sinus lift. In case 1, grafted bone was harvested from the mental region of the mandible, and implantation was performed at the same time as the autogenous corticocancellous bone block graft. In case 2, grafted bone was harvested from the alveolar bone in the anterior region of the mandible, and implantation was performed secondarily after the autogenous particulate bone graft.
Bone biopsy for histological analysis was performed in the above two cases.
In both cases, new trabecular bone was observed in the augmented sinus floor. However, the trabeculae were more dense on the alveolar side than in the central area. In the case with splintered bone, empty bone lacunae were seen in the grafted region.
