Collagen Matrix With Tunnel Technique Compared to CTG for the Treatment of Periodontal Recessions

The surgery starts with the sulcular incisions in the region of recessions, which enable access for the supraperiosteal preparation. The procedure is extended into the mucosal tissue using the tunneling knives. The partial-thickness flap is performed at the buccal site. Only the papillary regions are fully detached with the periosteum. The graft is placed into the tunnel and stabilized with absorbable sutures.The mobilized mucous flap is advanced coronally and stabilized with non-absorbable suspensory sutures.