{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T15:51:48Z","timestamp":1760889108020},"reference-count":12,"publisher":"FapUNIFESP (SciELO)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. Dent. J."],"published-print":{"date-parts":[[2015,10]]},"abstract":"<jats:p>Abstract: The aim of this randomized controlled clinical study was to compare the extended flap technique (EFT) with the coronally advanced flap technique (CAF) using a porcine collagen matrix (PCM) for root coverage. Twenty patients with two bilateral gingival recessions, Miller class I or II on non-molar teeth were treated with CAF+PCM (control group) or EFT+PCM (test group). Clinical measurements of probing pocket depth (PPD), clinical attachment level (CAL), recession height (RH), keratinized tissue height (KTH), keratinized mucosa thickness (KMT) were determined at baseline, 3 and 6 months post-surgery. At 6 months, the mean root coverage for test group was 81.89%, and for control group it was 62.80% (p&lt;0.01). The change of recession depth from baseline was statistically significant between test and control groups, with an mean of 2.21 mm gained at the control sites and 2.84 mm gained at the test sites (p=0.02). There were no statistically significant differences for KTH, PPD or CAL comparing the two therapies. The extended flap technique presented better root coverage than the coronally advanced flap technique when PCM was used.<\/jats:p>","DOI":"10.1590\/0103-6440201300353","type":"journal-article","created":{"date-parts":[[2015,12,5]],"date-time":"2015-12-05T15:50:23Z","timestamp":1449330623000},"page":"445-450","source":"Crossref","is-referenced-by-count":8,"title":["A Randomized Comparative Study of Two Techniques to Optimize the Root Coverage Using a Porcine Collagen Matrix"],"prefix":"10.1590","volume":"26","author":[{"given":"Danilo Maeda","family":"Reino","sequence":"first","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciana Prado","family":"Maia","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patr\u00edcia Garani","family":"Fernandes","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergio Luis Scombatti de","family":"Souza","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mario","family":"Taba Junior","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniela Bazan","family":"Palioto","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcio Fermandes de Moraes","family":"Grisi","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arthur Bel\u00e9m Novaes","family":"Jr.","sequence":"additional","affiliation":[{"name":"USP - Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","DOI":"10.1002\/14651858.CD007161.pub2","article-title":"Root coverage procedures for the treatment of localised recession-type defects","author":"Chambrone L","year":"2009","journal-title":"Cochrane Database Syst Rev"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1111\/j.1600-051X.2008.01267.x","article-title":"Treatment of gingival recession with coronally advanced flap procedures: a systematic review","volume":"35","author":"Cairo F","year":"2008","journal-title":"J Clin Periodontol"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"868","DOI":"10.1111\/j.1600-051X.2009.01460.x","article-title":"Clinical evaluation of a new collagen matrix (Mucograft prototype) to enhance the width of keratinized tissue in patients with fixed prosthetic restorations: a randomized prospective clinical trial","volume":"36","author":"Sanz M","year":"2009","journal-title":"J Clin Periodontol"},{"key":"ref4","doi-asserted-by":"crossref","first-page":"659","DOI":"10.1111\/j.1600-051X.2010.01581.x","article-title":"Soft tissue volume augmentation by the use of collagen-based matrices: a volumetric analysis","volume":"37","author":"Thoma DS","year":"2010","journal-title":"J Clin Periodontol"},{"key":"ref5","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1111\/jcpe.12019","article-title":"Treatment of gingival recession defects with a coronally advanced flap and a xenogeneic collagen matrix: a multicenter randomized clinical trial","volume":"40","author":"Jepsen K","year":"2013","journal-title":"J Clin Periodontol"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"1108","DOI":"10.1902\/jop.2010.090698","article-title":"Xenogeneic collagen matrix with coronally advanced flap compared to connective tissue with coronally advanced flap for the treatment of dehiscence-type recession defects","volume":"81","author":"McGuire MK","year":"2010","journal-title":"J Periodontol"},{"key":"ref7","doi-asserted-by":"crossref","first-page":"262","DOI":"10.1111\/j.1600-051X.2006.01039.x","article-title":"Coronally advanced flap: a modified surgical approach for isolated recession-type defects: three-year results","volume":"34","author":"Sanctis M","year":"2007","journal-title":"J Clin Periodontol"},{"key":"ref8","doi-asserted-by":"crossref","first-page":"1350","DOI":"10.1902\/jop.2004.75.10.1350","article-title":"A 6-month comparative clinical study of a conventional and a new surgical approach for root coverage with acellular dermal matrix","volume":"75","author":"Barros RR","year":"2004","journal-title":"J Periodontol"},{"key":"ref9","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1902\/jop.2011.110215","article-title":"Treatment of gingival recession defects using coronally advanced flap with a porcine collagen matrix compared to coronally advanced flap with connective tissue graft: a randomized controlled clinical trial","volume":"83","author":"Cardaropoli D","year":"2012","journal-title":"J Periodontol"},{"key":"ref10","first-page":"8","article-title":"A classification of marginal tissue recession","volume":"5","author":"Miller PD Jr.","year":"1985","journal-title":"Int J Periodontics Restorative Dent"},{"key":"ref11","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1902\/annals.2003.8.1.303","article-title":"Surgical therapies for the treatment of gingival recession. 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