Bone grafting is required for the successful implementation of implants where the natural bone is insufficient. Such insufficiency can be caused by periodontal disease, use of dentures for long periods of time, developmental defects, injury to the jaw, tooth loss or extraction without implant replacement, or other dental procedures in which the bone was not restored. To provide a sturdy foundation for the implant, the bone must be built up using synthetic or processed donor bone material. This is done surgically and held in place with a membrane to allow healing and integration to take place. Once fused, the bone will be ready for implant placement.
A sinus lift, or augmentation, is for patients who have insufficient bone in the sinus area where the upper teeth normally reside. The bone graft material is added to the floor of the sinus to create adequate bone for stable implant placement.