After upper back teeth are lost, both bone remodeling and sinus anatomy can reduce the amount of available bone. Imaging shows how much space exists for an implant.
Why the sinus matters
The roots of upper posterior teeth sit near the maxillary sinus. After tooth loss, the remaining bone height can become limited, leaving insufficient support for an implant of appropriate dimensions.
What the procedure does
A sinus augmentation elevates the sinus membrane and adds graft material to develop additional bone in the area planned for implants.
One stage or two stages
Depending on the existing bone and implant stability, an implant may sometimes be placed at the same procedure, or grafting may be completed first and allowed to heal.
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