Twenty-four month clinical outcomes of modified coronally advanced tunnel technique with leukocyte- and platelet-rich fibrin-functionalized porcine dermal matrix for single/multiple gingival recessions.

Gum recession, where the gum pulls away and exposes the tooth root, can cause sensitivity, esthetic concerns, and tissue loss. In this study we treated 83 teeth in 20 adults with gum recession using a minimally invasive tunnel technique combined with a soft tissue replacement material made from porcine (pig) skin that was coated with a blood concentrate prepared from the patient. We followed the teeth for 2 years and used 3-dimensional (3D) digital models made from dental casts to measure changes in gum position and thickness. On average, exposed root surfaces were reduced by about 80%, and in roughly one third of teeth the roots were fully covered again. The gums also became slightly thicker. Healing was uncomplicated, and results were similar in different tooth types and positions. Because this approach does not require taking a small piece of tissue from the roof of the mouth (connective tissue graft), it may reduce surgical discomfort while still providing stable coverage of exposed roots. However, direct comparisons with the current gold standard, connective tissue grafting, in randomized controlled trials are still needed to confirm these findings and to better understand patient-reported benefits such as pain and satisfaction.