Flap Thickness Upon Root Coverage With the Use of Acellular Dermal Matrix

In brief description, Tunnel+acellular dermal matrix treatment will be performed by starting initial sulcular incisions, tunneling knives will be used to elevate the buccal gingiva by means of a full-thickness flap elevation. Flap preparation will be extended beyond the MGJ. The exposed root surfaces will be treated with pre-conditioning EDTA (Straumann PrefGel®) for 2 minutes. ADM (OrACELL, LifeNet Helth, Virginia Beach, VA, USA) of 1.25-1.75mm in thickness will be cut to the exact size of the defect, and will be inserted into the tunnel, and subsequently covered advancing the flap by means of sling sutures to stabilize the flap in a coronal position (6-0 Polypropylene, Prolene, Ethicon, Johnson and Johnson, New Brunswick, NJ, USA). Sutures will be removed after 14 days. Two weeks after surgery, patients will resume mechanical tooth cleaning with a soft toothbrush. Patients will be recalled at 1, 3 and 6 months for professional oral hygiene procedures.