Sinus Lift graft
What is a sinus lift graft?
The maxillary sinuses are behind your cheeks and on top of the upper teeth. These sinuses are tissue lined, air-filled spaces. Some of the roots of the natural upper teeth extend up into the maxillary sinuses. When these upper teeth are removed there is often just a thin wall of bone and sinus membrane separating the maxillary sinus and the mouth. Dental implants need bone to hold them in place. When the sinus wall is very thin, we need to enhance the bone in order to place dental implants in this area.
The key to a successful and long-lasting dental implant is the quality and quantity of jaw bone to which the implant will be attached. If bone loss has occurred due to injury or periodontal disease, a sinus augmentation can raise the sinus floor and allow for new bone formation. A sinus lift is one of the most common bone grafting procedures for patients with bone loss in the upper jaw. The procedure involves placing bone above the bony ridge of the gum line and below the sinus membrane – this effectively raises or lifts the sinus without harming it and results in a new strong bone allowing us to place dental implants. These implants take the place of tooth roots and give an excellent, secure foundation for new teeth.
Am I a candidate for a sinus lift procedure?
A sinus lift may be necessary if you:
- are missing more than one tooth in the back of your jaw
- are missing a significant amount of bone in the back of your jaw
- are missing teeth due to a birth defect or condition
- are missing most of the maxillary teeth and require support for dental implants
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How is a sinus lift accomplished?
Most commonly, a small incision is made on the premolar or molar region to expose the jaw bone. A small opening is cut into the bone, and the membrane lining the sinus is pushed upward. The underlying space is filled with bone grafting material, either from your own body or from a other sources. Sometimes, synthetic materials that imitate bone formation are used. We typically use the PRGF and PRF technologies along with the bone graft materials to get the best results. After the graft is placed, the incision is sutured and the healing process begins. After several months of healing, the bone becomes part of the patient’s jaw and dental implants can be inserted and stabilized in the newly formed sinus bone.
If enough bone between the upper jaw ridge and the bottom of the sinus is available to sufficiently stabilize the implant, sinus augmentations and implant placement can sometimes be performed as a single procedure. If not enough bone is available, the sinus augmentation will have to be performed first, then the graft will have to mature for several months, depending upon the type of graft material used. Once the graft has matured, the implants can be placed.
The sinus graft makes it possible for many patients to have dental implants that previously had no other option besides wearing loose dentures. It also gives us better options for implant placement in procedures such as total implant treatment or All on four treatment.