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A sinus lift is surgery that adds bone to your upper jaw in the area of your Molars & Premolars. It's sometimes called a sinus augmentation. Maxillary sinus floor augmentation (also termed sinus lift, sinus graft, sinus augmentation or sinus procedure) is a surgical procedure which aims to increase the amount of bone in the posterior maxilla (upper jaw bone), in the area of premolar and molar teeth, by sacrificing some of the volume of the maxillary sinus.
When a natural tooth is lost, whether through dental decay, periodontal disease or dental trauma, the alveolar process begins to remodel. The edentulous (toothless) area is termed a ridge, which over time usually loses both height and width. Furthermore, the level of the floor of the maxillary sinus gradually becomes lower. Overall, this leads to a loss of volume of bone which is available for implantation of dental implants. The bone is added between the jaw and the maxillary sinuses, which are on either side of the nose. To make room for the bone, the sinus membrane has to be moved upward, or "lifted." A sinus lift usually is done by a specialist. This could be either an oral and Maxillofacial Surgeon or a Periodontist.
Sinus lift has become common during the last 15 years as more people are getting dental implants to replace missing tooth. The amount of bone used will vary case by case. Granules of bone graft material will be packed into the space where the sinus wall is or packed in the area where there is lack of bone to support implant. The goal of the sinus lift is to graft extra bone into the maxillary sinus, so more bone is available to support a dental implant.
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What It's Used For
A sinus lift is done when there is not enough bone height in the upper jaw, or the sinuses are too close to the jaw, for dental implants to be placed. There are several reasons for this:
Many people who have lost teeth in their upper jaw - particularly the back teeth, or molars - do not have enough bone for implants to be placed. Because of the anatomy of the skull, the back of the upper jaw has less bone than the lower jaw.
Bone may have been lost because of periodontal (gum) disease.
Tooth loss may have led to a loss of bone as well. Once teeth are gone, bone begins to be resorbed (absorbed back into the body). If teeth have been missing for a long time, there often is not enough bone left to place implants
Tooth loss may have led to a loss of bone as well. Once teeth are gone, bone begins to be resorbed (absorbed back into the body). If teeth have been missing for a long time, there often is not enough bone left to place implants.
The maxillary sinus may be too close to the upper jaw for implants to be placed. The shape and the size of this sinus vary from person to person. The sinus also can get larger as you age.
Sinus lifts have become common during the last 15 years as more people get dental implants to replace missing teeth.