Efficiency of platelet-rich plasma on acellular dermal matrix application with coronally advanced flap in the treatment of multiple adjacent gingival recessions: A randomized controlled clinical trial

Background/Purpose: The aim of this study was to evaluate the effectiveness of platelet rich plasma (PRP) combined with coronally advanced flap plus acellular dermal matrix application (CAF + ADM) in the treatment of multiple adjacent gingival recessions (MAGRs). Materials and methods: 12 patients with 84 Miller Class I or II recession defects were participated. Sites were randomly assigned into CAF + ADM + PRP or CAF + ADM groups. Gingival recession depth (GRD), recession width (GRW), width of keratinized tissue (WKT), creeping attachment (CRA), root coverage (RC) as well as plaque index (PI), gingival index (GI), probing depth (PD), and clinical attachment level (CAL) were recorded at baseline and 3rd,6th and 12th months postoperatively. The data were analyzed statistically. Results: GRD and GRW values were statistically higher in group CAF + ADM compared to the CAF + ADM + PRP group at 6th and 12th month (P < 0.05). CRA showed statistically significant increases in 3rd, 6th and 12th months with regard to the baseline in CAF + ADM + PRP group (P < 0.05), however CRA remained stable in CAF + ADM group at 6th and 12th month. The mean RC% was 77.9% and 69.4% for the CAF + ADM + PRP and CAF + ADM groups, respectively, at 12th month (P < 0.05). GRD reduction was statistically greater in the maxillary teeth treated with CAF + ADM + PRP compared to mandibular teeth treated with CAF + ADM at 12 months. Conclusion: Our data suggested that addition of PRP to CAF + ADM in the treatment of MAGRs significantly improved the clinical outcomes, according to 1-year follow-up results. (C) 2018 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V.