Bone Grafting Procedures:
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. Bone grafting can repair implant sites with inadequate bone structure due to previous extractions, gum disease or injuries.
The bone is either a synthetic replacement or obtained from a tissue bank. (http://www.accesslifenethealth.org/application/dental#subtab=FAQS)
*These bone grafts are gamma radiated bone and very strictly controlled.*