Cone-beam computed tomography evaluation of the simplified crestal approach for maxillary sinus floor augmentation using alveolar bone

Abstract

This case report presents a simplified crestal approach for maxillary sinus floor augmentation combined with alveolar osteotomy, aiming to secure the intermaxillary space and utilize autogenous bone for grafting. A 63-year-old female underwent this simplified crestal approach in conjunction with alveolar osteotomy. Preoperative and postoperative cone-beam computed tomography (CBCT) images were analyzed to evaluate anatomical structures and surgical outcomes. Quantitative CBCT measurements of residual bone height were obtained at multiple time points to document dimensional changes throughout the treatment course. The combined technique effectively secured the intermaxillary space, and exposure of the medullary cavity during osteotomy enabled successful sinus elevation via the crestal approach. At 15 months postoperatively, CBCT demonstrated stable implant integration, and no postoperative vertigo was reported. This technique may offer an efficient alternative for sinus elevation using alveolar bone; however, further studies are required to validate its long-term outcomes and broader clinical applicability.