Histologic Evaluation of Healing Following Tooth Extraction With Ridge Preservation Using NuOss XC and NuOss Particulate

INCLUSION CRITERIA: * may be either male or female * must be between 18 and 64 years old * must be of sufficiently good health to undergo routine dental treatment, including the surgical procedures associated with tooth extraction and placement of NuOss XC or NuOss particulate * must agree to remain in study for 6 months after ridge preservation (grafting) * must be able to physically, emotionally, and financially undergo the surgical and restorative (implant replacement) procedures planned. * must not have medical conditions that preclude the removal of indicated teeth and placement of NuOss XC or NuOss particulate * must have at least one single-rooted tooth to be extracted * must consent to tooth extractions, socket augmentation and implant placement * Patients with or without dental insurance Exclusion Criteria: * have any requirements for antibiotic premedication for heart murmurs, artificial joints, or any other condition * have a history of significant heart, stomach, liver, kidney, blood, immune system or other organ impairment or systemic disease that would prevent their undergoing the proposed treatment * smoke ≥ 10 cigarettes per day or use other tobacco products * have a religious or philosophical aversion to having processed bovine bone or collagen used in their mouth * have taken any investigational drugs anytime in the previous month * have dental conditions likely to require treatment, necessitating exit from the study such as deep caries, abscesses, or moderate-severe periodontal disease(s). * have sockets that do not have four bony walls intact. * cannot comply with treatment and follow-up visits for 6 months * have had significant radiation exposure (occupational, therapeutic, diagnostic).