Management of Isolated RT 3 Gingival Recession With Modified Coronally Advanced Tunnel Versus Vestibular Incision Subperiosteal Tunnel Access With Volume Stable Collagen Matrix: A RCT

Gingival recession is the migration of the gingiva to a point apical to the cement-enamel junction and is considered one of the most common periodontal problems.Besides aesthetic complaints, GR may also cause root hypersensitivity, risk for development of caries or non-carious cervical lesions, and difficulties to achieve optimal plaque control. In modified coronally advanced Tunnel (MCAT) technique partial-thickness flap is created on the entire buccal aspect, no parts of the alveolar bone are exposed, and resorption of bony structures, which occurs when using a full-thickness flap can be avoided, also,it minimizes trauma and ensure a better blood supply for the graft.

Zadeh H. in 2011 introduced a conservative modification in tunnel technique; vestibular incision subperiosteal tunnel access (VISTA) which preserve the papillary integrity and enhances patients compliance. Vista technique allows gingival tissue regeneration through subperiosteal undermining of soft tissues using a vestibular incision instead of elevating the whole flap.VISTA offers broader access and maximum esthetic outcome because of placement of incision in the frenum region.