{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T00:21:17Z","timestamp":1768263677461,"version":"3.49.0"},"reference-count":22,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2009,3,1]],"date-time":"2009-03-01T00:00:00Z","timestamp":1235865600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2009,3]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> The primary aim of this randomized, controlled, blinded clinical pilot study was to compare the percentage of recession defect coverage obtained with a coronally positioned tunnel (CPT) plus an acellular dermal matrix allograft (ADM) to that of a CPT plus ADM and platelet\u2010rich plasma (CPT\/PRP) 4 months post\u2010surgically.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Eighteen patients with Miller Class I or II recession \u22653 mm at one site were treated and followed for 4 months. Nine patients received a CPT plus ADM and were considered the positive control group. The test group consisted of nine patients treated with a CPT plus ADM and PRP. Patients were randomly selected by a coin toss to receive the test or positive control treatment.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> The mean recession at the initial examination for the CPT group was 3.6 \u00b1 1.0 mm, which was reduced to 1.0 \u00b1 1.0 mm at the 4\u2010month examination for a gain of 2.6 \u00b1 1.5 mm or 70% defect coverage (<jats:italic>P<\/jats:italic> &lt;0.05). The mean recession at the initial examination for the CPT\/PRP group was 3.3 \u00b1 0.7 mm, which was reduced to 0.4 \u00b1 0.7 mm at the 4\u2010month examination for a gain of 2.9 \u00b1 0.5 mm or 90% defect coverage (<jats:italic>P<\/jats:italic> &lt;0.05). There were no statistically significant differences between the groups (<jats:italic>P<\/jats:italic> &gt;0.05).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> The CPT plus ADM and PRP produced defect coverage of 90%, whereas the CPT with ADM produced only 70% defect coverage. This difference was not statistically significant, but it may be clinically significant.<\/jats:p>","DOI":"10.1902\/jop.2009.080438","type":"journal-article","created":{"date-parts":[[2009,3,2]],"date-time":"2009-03-02T08:44:02Z","timestamp":1235983442000},"page":"397-404","source":"Crossref","is-referenced-by-count":46,"title":["Root Coverage Using Acellular Dermal Matrix and Comparing a Coronally Positioned Tunnel With and Without Platelet\u2010Rich Plasma: A Pilot Study in Humans"],"prefix":"10.1002","volume":"80","author":[{"given":"Neal","family":"Shepherd","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henry","family":"Greenwell","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Margaret","family":"Hill","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ricardo","family":"Vidal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James P.","family":"Scheetz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2009,3]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"216","article-title":"Use of the supraperiosteal envelope in soft tissue grafting for root coverage. 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