Following tooth extraction there is often resorption of the surrounding bone, resulting in loss of both bone height and width. As bone resorbs the overlying gum tissue also tends to lose both volume and its normal anatomic form. This loss of bone and gum tissue following tooth extraction often results in both functional and cosmetic defects, leaving an unsightly collapsed appearance.
At ORA® we take a proactive stance on bone preservation, and because of advances in grafting procedures and bioengineering, bone and gum tissue loss following tooth removal can either be greatly reduced or completely eliminated. This proactive technique is termed ridge preservation bone grafting. Following the removal of a tooth, a specially bioengineered graft material is placed within the extraction socket. The bone graft material not only supports new bone growth, but also has been shown to preserve bone and overlying soft tissue following tooth removal.
For those patients that have had teeth missing for some time with typical resultant bone loss, Dr. Koos employs several bone grafting techniques to restore deficient areas, thereby creating implant placement possibilities which would otherwise be absent. These techniques include sinus lift and bone grafting for the upper maxillary posterior deficient bone areas, cortical block grafting also referred to as onlay block grafting for deficient ridge height, ridge split widening and bone grafting for deficient bone ridge width. The grating techniques can employ a variety of sources of bone ranging from the patient (autologous), form human cadaver sources (allograft), animal sources (bovine bone), and synthetic bone substitutes.