Root Coverage Using ADM and Coronally Positioned Tunnel With or Without Enamel Matrix Derivative

Inclusion Criteria: * Presence of at least one Miller class 1 or 2 soft tissue recession defect \>3 mm on a non-molar tooth. * Healthy patients, at least 18 years of age. * Patient understands and signs an informed consent approved by the University of Louisville IRB. Exclusion Criteria: * Patients with debilitating systemic diseases, diseases that significantly affect the periodontium, infectious diseases, or psychological problems that may interfere with treatment. * Previous head and neck radiation or chemotherapy within the previous 12 months. * Patients with known allergies to any of the materials used in the study, including systemic antibiotics. * Patients that use tobacco products (smoking, smokeless tobacco, or electronic cigarettes). * Patients with alcohol abuse problems. * Patients requiring antibiotic prophylaxis for dental procedures. * Cemento-enamel unction not identifiable. * Root surface restorations at the recession site. * Patients undergoing long-term steroid therapy. * History of previous root coverage procedure, graft, or guided tissue regeneration involving the recession site. * Pregnant or lactating patients. * Patients who fail to maintain oral hygiene levels of at least 80% plaque-free surfaces. * Patients who fail to complete the informed consent form.