Xenogeneic matrices (XMs) have been increasingly used for root coverage procedures. This study compared the use of two types of XM (collagen matrix [CM] and xenogeneic acellular dermal matrix [XDM]) associated with the coronally advanced flap technique (CAF) to treat single gingival recessions.
Seventy-five patients presenting single RT1 gingival recession were treated by CAF (control group, n = 25), CAF+CM (test group 1, n = 25), or CAF+XDM (test group 2, n = 25) and completed 6-month follow-up. Clinical, patient-centered, and esthetic assessments were performed and intra- and intergroup differences were analyzed.
At 6 months, the mean recession reduction for CAF, CAF+CM, and CAF+XDM was 2.4±0.8mm, 2.4±0.9mm and 2.1±0.8mm, respectively (p>0.05). The corresponding mean percentage of root coverage was 78.9±26.2% for CAF, 78.0±28.5% for CAF+CM, and 65.6±26.9% for CAF+XDM (p>0.05). Dentin hypersensitivity and esthetic conditions showed significantly improvements in all groups. Test groups presented significant gains in gingival thickness (GT; CAF+CM: 0.4±0.3mm; CAF+XDM: 0.4±0.2mm) compared to the control group (CAF: 0.0±0.1mm; p<0.05).
The CAF, CAF+CM, and CAF+XDM treatments each provided similar results in the treatment of single gingival recessions. The addition of either CM or XDM to CAF increases the GT. This article is protected by copyright. All rights reserved.

This article is protected by copyright. All rights reserved.