Replacing missing upper back teeth can be very difficult. When the back teeth in the upper jaw are missing, the sinus cavity in your cheekbones becomes enlarged as your natural bone deteriorates. This means there won’t be enough bone height to place an implant (see picture). A sinus lift, also known as a sinus augmentation or sinus elevation, is a bone grafting procedure for patients with such an enlarged sinus that it would otherwise be impossible to place an implant.
The procedure involves adding bone between your sinus and your jawbone so that an implant can be placed. The procedure does not affect speech, intonation or cause sinus problems.
The original procedure involved an open approach from the side that would be a more invasive surgery. And while we still sometimes have to use the open approach, however, new techniques and tools allow us to perform a closed sinus lift or crestal sinus lift. In the closed technique, we create an opening for the implant and then using that opening to place the bone grafting material between your sinus and your jawbone. This technique allows for a much less invasive surgery but still achieves excellent results.