Treatment of Local Gingival Recession With an Enamel Matrix Protein Coated Collagen Matrix

Inclusion Criteria: * Signed Informed Consent * able to achieve good oral hygiene (full mouth plaque score \< 20 %, full mouth bleeding score \< 20%), * patients presenting with at least one gingival recession defect Exclusion Criteria: * general contraindications to dental surgery under local anaesthesia (e.g., severe systemic diseases, tumours, severe cardiovascular diseases, uncontrolled diabetes mellitus); * ongoing or previous chemotherapy, radiotherapy, or bisphosphonate therapy; * self-reported heavy smokers (more than 10 cigarettes/day); * pregnancy and nursing mothers; * disorders or treatments that impair wound healing; * long-term treatment with high-dose steroids or anticoagulants; * bone metabolism disorders; * infections or vascular disorders in the region to be treated; * known hypersensitivity to porcine collagen; * patients with severe peripheral artery disease or autoimmune diseases; * extruded or malpositioned teeth.