Tehran University of Medical Sciences Case Reports in Clinical Practice 2538-2683 8 4 2024 01 09 135 138 Arash Tahmasebi DDS, OMFS , Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran. Seyed Hadi Hoseini DDS, OMFS, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran donya maleki Student Research Committee, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, Iran 2023 02 02 2023 09 13 This study introduces the anterior wall of the maxillary sinus as a viable and accessible graft site for small to moderate bone defects in the maxilla that pose challenges for implantation. A healthy 40-year-old woman was referred by a prosthodontist due to malpositioned implants. Following a comprehensive assessment, the decision was made to remove the implants. Upon executing this treatment plan, a medium-sized defect was revealed. The flap was elevated to expose the anterior wall of the maxillary antrum, from which an osseous graft was obtained. This graft was then fixed as a buccal wall of the defect and supported by a membrane. After a healing period of 6 months, two implants were successfully inserted. The anterior wall of the maxillary sinus can serve as a beneficial graft source. However, more extensive studies with appropriate design are required to reach a definitive conclusion. https://crcp.tums.ac.ir/index.php/crcp/article/view/787