Above the teeth in your upper jaw lies your maxillary sinuses. If teeth are lost or extracted from this location or the sinuses are too close to the upper jaw, only a thin layer of bone will remain between the mouth and this membrane. This creates insufficient bone height to safely support dental implants and not damage this membrane, especially if it is already large. If you’ve lost teeth and bone in your upper jaw, you may need a sinus lift to create a stable environment for new teeth. One of the more complex bone grafting procedures, a sinus lift or augmentation needs the expertise of a skilled surgeon to be successful and predictable as it involves handling the delicate tissues of the membrane. Oral and maxillofacial surgeons are the dental field’s experts in bone grafting surgeries and have the most training and experience in such procedures as sinus lifts.