Abstract
Fourteen maxillary sinuses were reconstructed in 12 patients who presented with a previous sinus elevation failure. In all cases, large perforations of the sinus membrane occurred during removal of the failed graft from the sinus; the perforations were sealed with fibrin glue, then the site was grafted using homologous fibrin glue (HFG) mixed with a calcium phosphate scaffold (CPS). Histologic analyses revealed that the CPS-HFG graft was followed by an ossification process, with the formation of spongy bone similar to that of the normal skeleton. Twenty-four endosseous implants were successfully placed into the newly regenerated bone. All implants were successfully restored with ceramic crowns 6 months after placement. At the 3-year follow-up, no infections or implant failures were reported. The described technique offers several clinical advantages, as the removal of the failed graft, the sinus perforation repair, and the sinus elevation can be achieved in the same surgery without needing to postpone the regenerative surgery phase.
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