Sinus lift surgery, also known as sinus augmentation, is a specialized procedure in dental implantology designed to increase bone height in the upper jaw, particularly beneath the maxillary sinuses. This surgery is often necessary for individuals who lack sufficient bone volume in the posterior maxilla, typically due to bone loss from periodontal disease, tooth loss, or aging. During the procedure, an oral surgeon or periodontist lifts the sinus membrane and places bone graft material into the space where the sinus once was. The bone graft, which may be sourced from the patient, a donor, or synthetic material, integrates with the existing bone over several months, creating a solid foundation for dental implants. Sinus lift surgery significantly improves the success rate of dental implants, which are vital for restoring functionality and aesthetics to patients with missing teeth. Though the procedure is relatively safe, patients may experience swelling and discomfort during recovery. However, the long-term benefits, including enhanced oral health and restored confidence, often outweigh the temporary inconveniences.