Sinus lifting, also known as sinus augmentation or sinus floor elevation, is a surgical procedure performed in dentistry to increase the amount of bone in the upper jaw, specifically in the area of the maxillary sinuses. It is commonly done to prepare the jawbone for dental implant placement when there is insufficient bone height or volume due to the expansion of the maxillary sinuses.

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During a sinus lift procedure, the sinus membrane is gently lifted or pushed upward, and a bone graft material is placed in the space created between the sinus floor and the existing bone. The bone graft material may be taken from the patient's own body (autogenous graft), sourced from a donor or synthetic material (allograft or alloplast), or a combination thereof. The bone graft material stimulates new bone growth over time, which integrates with the patient's existing bone, creating a more stable and suitable foundation for dental implants.

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Sinus lifting is typically performed by a maxillofacial surgeon, and it is usually done under local anesthesia. After the procedure, a period of healing is required to allow the bone graft to integrate and regenerate. This can take several months before dental implant placement can be carried out.

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Sinus lifting enables patients with insufficient bone in the upper jaw to receive dental implants and restore missing teeth with a more stable and successful long-term outcome. It has become a common and effective procedure in implant dentistry.