Extraction of a tooth results in some loss of the bone ridge, which anchors the tooth.  The loss of bone can be quite dramatic even after only a year.  This can cause an unsightly appearance and prevent the future placement of dental implants.  Socket Preservation can significantly reduce the bone loss.  Replacement material is placed in the extraction socket to stimulate bone growth.  A membrane may also be used to prevent soft tissue from growing into the extraction socket and keep the bone graft material in place during healing.