{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T19:48:34Z","timestamp":1789847314712,"version":"4.0.1"},"reference-count":26,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2012,7,4]],"date-time":"2012-07-04T00:00:00Z","timestamp":1341360000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2013,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess if overbuilding the buccal plate or using a dual\u2010layer socket grafting technique prevents alveolar bone resorption and enhances final ridge width, height, and volume after tooth loss in an animal model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and methods<\/jats:title><jats:p>In eight beagle dogs bilateral second (P2)\u2010, third (P3)\u2010, and fourth (P4) premolars were endodontically treated. All bilateral mandibular first premolars and distal roots of P2, P3, and P4 were hemisectioned and atraumatically extracted. Animals were randomly divided into four groups: (i) Control\u2013Socket alone, (ii) Particulate allograft in the alveolum, socket covered with high\u2010density polytetrafluoroethylene (<jats:styled-content style=\"fixed-case\">dPTFE<\/jats:styled-content>) membrane and sutured over the alveolum, (iii) Particulate allograft in the alveolum and overbuilding the buccal plate, socket covered with <jats:styled-content style=\"fixed-case\">dPTFE<\/jats:styled-content> membrane and sutured over the alveolum, (iv) Particulate allograft in the alveolum and covered with dual layer (<jats:styled-content style=\"fixed-case\">dPTFE<\/jats:styled-content> placed over collagen membrane), and sutured over the alveolum. After 16\u00a0weeks, the animals were sacrificed. Mandibular blocks of the jaws were assessed for bone volume (<jats:styled-content style=\"fixed-case\">BV<\/jats:styled-content>), vertical bone height (<jats:styled-content style=\"fixed-case\">VBH<\/jats:styled-content>), alveolar ridge thickness, and bone mineral density (<jats:styled-content style=\"fixed-case\">BMD<\/jats:styled-content>) using micro\u2010computed tomography.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The <jats:styled-content style=\"fixed-case\">BV<\/jats:styled-content> in groups 1, 2, 3, and 4 was 169.5, 207.57, 242.4, and 306.1\u00a0mm<jats:sup>3<\/jats:sup>, respectively. The <jats:styled-content style=\"fixed-case\">VBH<\/jats:styled-content> in groups 1, 2, 3, and 4 was 4.2, 6.4, 6.2, and 7.3\u00a0mm, respectively. Ridge widths in groups 1, 2, 3, and 4 were 5.45\u00a0\u00b1\u00a00.75, 5.91\u00a0\u00b1\u00a00.86, 6.05\u00a0\u00b1\u00a00.63, and 6.28\u00a0\u00b1\u00a01.01\u00a0mm, respectively. There was no significant difference in <jats:styled-content style=\"fixed-case\">BMD<\/jats:styled-content> between the groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The <jats:styled-content style=\"fixed-case\">RP<\/jats:styled-content> using a dual layer of membrane following tooth extraction results in more <jats:styled-content style=\"fixed-case\">BV<\/jats:styled-content>,<jats:styled-content style=\"fixed-case\"> VBH<\/jats:styled-content>, and alveolar ridge width as compared to when a single layer of membrane is used.<\/jats:p><\/jats:sec>","DOI":"10.1111\/j.1600-0501.2012.02526.x","type":"journal-article","created":{"date-parts":[[2012,7,5]],"date-time":"2012-07-05T07:23:32Z","timestamp":1341473012000},"page":"1152-1157","source":"Crossref","is-referenced-by-count":12,"title":["Efficacy of using a dual layer of membrane (d<scp>PTFE<\/scp> placed over collagen) for ridge preservation in fresh extraction sites: a micro\u2010computed tomographic study in dogs"],"prefix":"10.1111","volume":"24","author":[{"given":"Khalid","family":"Al\u2010Hezaimi","sequence":"first","affiliation":[{"name":"Engineer Abdullah Bugshan Research Chair for Growth Factors and Bone Regeneration, 3D Imaging and Biomechanical Lab, College of Applied Medical Sciences King Saud University Riyadh Saudi Arabia"},{"name":"Department of Periodontics and Community Dentistry, College of Dentistry King Saud University Riyadh Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"Rudek","sequence":"additional","affiliation":[{"name":"School of Dentistry, University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Khalid S.","family":"Al\u2010Hamdan","sequence":"additional","affiliation":[{"name":"Engineer Abdullah Bugshan Research Chair for Growth Factors and Bone Regeneration, 3D Imaging and Biomechanical Lab, College of Applied Medical Sciences King Saud University Riyadh Saudi Arabia"},{"name":"Department of Periodontics and Community Dentistry, College of Dentistry King Saud University Riyadh Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fawad","family":"Javed","sequence":"additional","affiliation":[{"name":"Engineer Abdullah Bugshan Research Chair for Growth Factors and Bone Regeneration, 3D Imaging and Biomechanical Lab, College of Applied Medical Sciences King Saud University Riyadh Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nasser","family":"Nooh","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery King Saud University Riyadh Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hom\u2010Lay","family":"Wang","sequence":"additional","affiliation":[{"name":"Engineer Abdullah Bugshan Research Chair for Growth Factors and Bone Regeneration, 3D Imaging and Biomechanical Lab, College of Applied Medical Sciences King 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