When is a sinus lift necessary?
A sinus lift is required if there is inadequate bone height in the upper jaw to support a dental implant. The maxillary sinus membrane is lifted upwards to create space for the additional bone. This may be needed if implants are indicated for the upper jaw.
A cone-beam CT (CBCT) is usually done for the assessment of the bone quality before planning for a sinus lift. This scan will allow the dentist to accurately measure the height, width, and density of your existing bone as well as to evaluate the health of your sinus, together with other considerations.
What happens during a sinus lift procedure?
Sinus lifts are usually performed under local anesthesia. The gum tissue will be raised to expose the deficient bone and the site prepared to receive the grafting material. A small window is opened in the upper jaw bone next to the sinus. The sinus membrane is gently pushed up and away from the jaw before the bone graft material is packed into space where the sinus was. Once the bone is in place, stitches are placed to hold the new bone material securely.
Your dentist will evaluate the surgical site and remove stitches 2 weeks after the sinus lift surgery. It will take several months for the bone material to harden and integrate with your jaw.