Major & Minor Bone Grafting
Over a period of time, the jawbone associated with missing teeth atrophies or is reabsorbed. This often leaves a condition in which there is poor quality and quantity of bone suitable for placement of dental implants. In these situations, most patients are not candidates for placement of dental implants.
Today, we have the ability to grow bone where needed. This not only gives us the opportunity to place implants of proper length and width, it also gives us a chance to restore functionality and esthetic appearance.
Major Bone Grafting
Bone grafting can repair implant sites with inadequate bone structure due to previous extractions, gum disease, or injuries. The bone is either obtained from a tissue bank or your own bone is taken from the jaw, hip, or tibia (below the knee.) Sinus bone grafts are also performed to replace bone in the posterior upper jaw. In addition, special membranes may be utilized that dissolve under the gum and protect the bone graft and encourage bone regeneration. This is called guided bone regeneration or guided tissue regeneration.
Major bone grafts are typically performed to repair defects of the jaws. These defects may arise as a result of traumatic injuries, tumor surgery, or congenital defects. Large defects are repaired using the patient's own bone. This bone is harvested from a number of different sites depending on the size of the defect. The skull (cranium), hip (iliac crest), and lateral knee (tibia) are common donor sites. These procedures are routinely performed in an operating room and require a hospital stay.
Traditionally, eliminating the gum pockets by trimming away the infected gum tissue and by re-contouring the uneven bone tissue treats gum disease. Although this is still an effective way of treating gum disease, new and more sophisticated procedures are used routinely today.
During this procedure, which is performed under local anesthesia, your periodontist will gently turn back the gum tissue and remove the disease-causing bacteria and infected tissue. In addition, he may place a gel, called a biomodifier, to prepare the root surface and help ensure the bone regeneration substance adheres to the tooth and successfully begins to regenerate bone. These substances can include membranes (filters), bone grafts, tissue-stimulating proteins, growth factors or a combination thereof, and will help to encourage your body's natural ability to regenerate bone and tissue.