“Firm integration of implants to the bone determines the success of dental implant.”
Bone grafting is the process in which the dentist uses bone grafts to build up a thin or shrunken jawbone. Bone grafts may be autologous (bone harvested from the patient’s own body, often from the iliac crest), allograft (cadaveric bone usually obtained from a bone bank), or synthetic (often made of hydroxyapatite or other naturally occurring and biocompatible substances) with similar mechanical properties to bone. If you are considering an implant but dental x-rays and/or CAT scan show that you have a thin jawbone as a result of bone loss then a bone graft will be necessary.
Dental implants require bones underneath them for support and to have the implant integrate properly into the jaw. People who have been edentulous (without teeth) for a prolonged period may not have enough bone left in the necessary locations. In this case, bone grafting should be done underneath the new implant.