Usually performed as an outpatient procedure under local anesthesia, the procedure is not uncomfortable. Where your back teeth were, your surgeon will make a cut in the gums. A tiny window in the bone is then opened in an external sinus lift. Your nasal lining is gently forced upward and away from your jaw. Below the sinus, bone is pressed in. In the external technique, a membrane patch may be applied over the bone graft. Dissolvable stitches are used to seal the gums once the bone is in position. Before dental implants are placed, the sinus lift is given time to fuse with your own bone, which may take four to nine months. The quantity of bone determines how long it takes.
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