Atrophic Maxilla Reconstruction With Freeze‐Dried Allogenic Bone Graft Blocks and Sinus Lift With Granulated Xenograft: A Case Report

A commonly encountered situation in clinical implantology is the lack of adequate bone support for implant placement, particularly in the maxilla, which can compromise the prognosis for jaw rehabilitation. The most reliable technique to create adequate bone support is bone grafting, which can be autogenous, xenogenous, or allogeneic. This report presents a case in which a protocol‐type implant‐supported prosthesis was performed in the maxillary region, using freeze‐dried allogeneic bone grafting due to a lack of sufficient bone support. Two blocks of freeze‐dried allogeneic bone graft were sectioned into four fragments, which were installed in the anterior maxillary region and the anterior wall of the maxillary sinus, along with bilateral sinus‐lift surgery using granulated xenogenous bone graft. After the healing and subsequent incorporation of the grafted block, eight external hexagon implants were installed. After an appropriate healing period, prosthetic rehabilitation was initiated. The 6‐year clinical and radiographic follow‐up demonstrated adequate bone support around the implant; the patient is satisfied with both the esthetic and functional outcomes of the treatment. The use of an allogeneic bone graft, which eliminated the need for a donor site and reduced procedural morbidity, contributed positively to rehabilitation success and patient experience.