{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T18:10:41Z","timestamp":1789495841742,"version":"build-2803163510"},"reference-count":51,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2020,8,17]],"date-time":"2020-08-17T00:00:00Z","timestamp":1597622400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["aap.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The long\u2010term outcomes of acellular dermal matrix (ADM) for the treatment of isolated gingival recessions has not yet been evaluated. Thus, the aim of this study was to observe the root coverage outcomes of coronally advanced flap with ADM over time, and compare them with their adjacent untreated sites.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Twelve patients (from 20) were available at the 9\u2010year recall. Clinical parameters (recession depth, mean root coverage [mRC], keratinized tissue width [KTW], and gingival thickness) were evaluated and compared with the 1\u2010year results, and the ADM\u2010adjacent untreated sites (on mesial and distal) via mixed\u2010modeling regression analyses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>From 1 to 9 years, the ADM\u2010treated isolated recessions showed a relapse from 77% to 62% mRC (<jats:italic>P<\/jats:italic>\u00a0&lt;0.05). A similar pattern toward apical shift of the gingival margin was noticed for the ADM\u2010adjacent untreated sites without baseline recession. However, ADM\u2010adjacent untreated sites which had presented with recession at baseline but were not treated showed a significantly more apical shift of the gingival margin (almost two\u2010fold). A significant increase in KTW was noted for all sites. Baseline KTW \u22652\u00a0mm was a significant predictor for the stability of the gingival margin at the ADM\u2010treated, and the ADM\u2010adjacent sites with baseline recession.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>ADM\u2010treated sites displayed recession relapse from 1 to 9 years. The untreated adjacent sites with a recession at baseline, showed a higher apical displacement of the gingival margin compared with the ADM\u2010treated sites, and ADM\u2010adjacent sites without a recession at baseline.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.20-0310","type":"journal-article","created":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T11:03:39Z","timestamp":1596107019000},"page":"254-262","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Acellular dermal matrix for root coverage procedures: 9\u2010year assessment of treated isolated gingival recessions and their adjacent untreated sites"],"prefix":"10.1002","volume":"92","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5347-6577","authenticated-orcid":false,"given":"Shayan","family":"Barootchi","sequence":"first","affiliation":[{"name":"Department of Periodontics &amp; Oral Medicine University of Michigan School of Dentistry  Ann Arbor MI 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