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Bone grafting is a procedure that is used to build bone so that dental implants can be placed. Bone grafting techniques are designed to rebuild bone structure with the minimum amount of surgery necessary and optimal patient comfort.
Major bone grafting is usually performed when patients need to repair defects of the jaw. Large defects are repaired using the patient’s own bone, which is harvested from other places on the patient’s body. Common donor sites include the skull, hip, and knee. Defects that require major bone grafting include when the patient suffers a traumatic injury, tumor surgery, or congenital defects. Major bone grafting procedures are typically performed in a hospital operating room, and require a hospital stay.
Minor bone grafting is usually performed when the patient does not have enough bone structure to support and stabilize an implant. Ridge Preservation, Sinus Lift Procedure and Onlay Bone Grafting are all forms of minor bone grafting surgeries.
The alveolar ridge bone is a special type of bone surrounding and supporting the teeth. When a tooth has been removed, this bone begins to deteriorate. It can also lose density due to natural breakdown from age, or from disease.
Ridge expansion is performed when the jaw is not wide enough or high enough to support implants. The bony ridge of the jaw is increased by splitting the bone with surgical instruments. Bone graft material is inserted and allowed to heal before placing the implant. In some cases, the implant is placed when the ridge is split.
The surgery is typically performed in the office surgical suite under IV sedation or general anesthesia.
Bone loss can occur due to many reasons, including:
Bone grafting can increase the height or width of the jawbone and fill in voids and defects in the bone. Deformities in the jawbone can be corrected, and restructuring of the bone can provide added support. Bone grafting can also be used to limit or prevent bone recession following a tooth extraction or periodontal disease.
There are several types of bone grafts available, including:
The bone grafting procedure can often take several months to complete. Bone is added to the affected site. This bone will fuse with the existing bone and the migration of cells will cause firm adhesion and cell growth. Supplementing the jaw with bone will result in greater bone mass to help support and anchor dental implants.