Bone Grafting

This tooth is unrestorable due to the large amount of bone loss that is missing on the front side of the tooth

This tooth is unrestorable due to the large amount of bone loss that is missing on the front side of the tooth.

The defect in the bone is filled in with bone used from various sources

The defect in the bone is filled in with bone used from various sources.

The tooth is removed and there is a large hole in the bone that needs to be filled in

The tooth is removed and there is a large hole in the bone that needs to be filled in.

The gum is the covered up

The gum is the covered up. The goal is to preserve the height of the bone so that an implant can be placed.

Bone Grafting

Bone grafts are used to fill in a defect where the bone is missing around the teeth or where bone is needed for implants. The catch 22 with dental implants is that you need bone to support the implant but the reason must people need an implant is that they lost their tooth or teeth due to a lack of bone. In cases where there is a lack of bone, it is necessary to create bone through bone grafting. Bone grafting procedures can be used to build up or fill in jawbone defects allowing the placement of dental implants. These techniques represent some of the greatest advances in modern dentistry. There are generally four types of bone grafts used:

Autografts

Autografts are those where the bone to be grafted to the jaw is taken, or harvested, from your own body. The donor site, which is where the bone is harvested from, is usually the mouth or the hip. This is your own bone and is very compatible with your body. Autografts are generally the best graft technique and usually result in the greatest regeneration of missing jawbone.

Allografts

Allografts are taken from human donors. Many countries have donor programs where you can specify that in the event of your death, parts may be harvested from your body to save or improve the life of others. Heart transplants are one type of allograft. This can represent one of the greatest "gifts" you can ever give. Bone obtained in this manner undergoes rigorous tests and sterilization. Your body "converts" the donor bone into your natural bone, thereby rebuilding your resorbed jawbone.

Alloplastic

Alloplastic grafts are inert, manmade synthetic materials. The modern artificial joint replacement procedure uses metal alloplastic grafts. For bone replacement a man made material that mimics natural bone is used. Most often this is a form of calcium phosphate. Depending on how it is made, it may be "resorbable" or "non-resorbable." That is, your body may or may not replace the alloplastic graft with your natural bone. In those cases where it is not replaced it acts as a lattice or scaffold upon which natural bone is built. In either case, the end result is to create enough bone for the placement of dental implants.

Xenografts

Xenografts are harvested from animals. The animal bone, most commonly bovine (cow), is specially processed to make it biocompatible and sterile. It acts like a "filler" which in time your body will replace with natural bone. After this replacement process is complete dental implants may be placed to support the missing teeth.

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