What Is a Sinus Lift?
A sinus lift (also called sinus floor elevation or sinus augmentation) is a surgical procedure that carefully lifts the maxillary sinus membrane to access the sinus floor, then bone graft material is packed beneath to increase vertical bone height in the posterior upper jaw.
This creates space for dental implants in an area where bone height would otherwise be insufficient.
Two surgical approaches: lateral window approach (bone removed from the side of the sinus) — more invasive, larger defect, 6–9 months healing; crestal approach using osteotomes (small instruments) — less invasive, no bone removal, 4–6 months healing.