The alveolar process is sensitive to a variety of environmental and
physiologic factors that influence its ability to function and maintain
its integrity. Before implant therapy became available, the physiology
and healing patterns of the edentulous ridge after a tooth was extracted
were often neglected or not dealt with properly. These situations demand
augmentation of the residual ridge to achieve successful implant
placement and long-term survival. Although alveolar bone loss can be
congenital, the result of trauma, pathology, and chronic/acute
infection. In fact, after a tooth is extracted, approximately 25% of the
bone volume has been reported to be lost after the first year. Over
time, this deterioration may progress and is often reported to be
responsible for a 40-60% loss of alveolar volume during the first 3
years after a tooth is lost. The placement of bone grafting materials to
favor healing in osseous defects or to augment atrophic edentulous
ridges to allow dental implant installation has been evaluated in a
number of experimental and clinical studies, and has become a gold
standard treatment in implant dentistry.