{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T16:51:13Z","timestamp":1787935873198,"version":"build-2784847793"},"reference-count":45,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2021,4,3]],"date-time":"2021-04-03T00:00:00Z","timestamp":1617408000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["aap.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>It is unclear if an intact buccal bony plate is a prerequisite for immediate implant placement in post\u2010extraction sockets. The aim of this 5\u2010year randomized controlled trial was therefore comparison of peri\u2010implant soft and hard tissue parameters, esthetic ratings, and patient\u2010reported satisfaction of immediate implant placement in post\u2010extraction sockets with buccal bony defects of \u2265 5\u00a0mm in the esthetic zone, with delayed implant placement after ridge preservation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients presenting a failing tooth in the esthetic region and a buccal bony defect of \u2265 5\u00a0mm after extraction were randomly assigned to immediate (Immediate group, <jats:italic>n<\/jats:italic>\u00a0=\u00a020) or delayed (Delayed group, <jats:italic>n<\/jats:italic>\u00a0=\u00a020) implant placement. Second\u2010stage surgery and placement of a provisional restoration occurred 3 months after implant placement in both groups, followed by definitive restorations 3 months thereafter. The follow\u2010up was 5 years. Marginal bone level (primary outcome), buccal bone thickness, soft tissue parameters, esthetics, and patient\u2010reported satisfaction were recorded.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mean marginal bone level change was \u22120.71 \u00b1 0.35\u00a0mm and \u22120.54 \u00b1 0.41\u00a0mm in respectively the Immediate group and the Delayed group after 5 years (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.202). This difference, and in other variables, was not significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Marginal bone level changes, buccal bone thickness, clinical outcomes, esthetics, and patients\u2019 satisfaction following immediate implant placement, in combination with bone augmentation in post\u2010extraction sockets with buccal bony defects of \u2265 5\u00a0mm, were comparable to those following delayed implant placement after ridge preservation in the esthetic zone.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.20-0845","type":"journal-article","created":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T07:56:56Z","timestamp":1615881416000},"page":"1738-1748","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":54,"title":["Immediate single\u2010tooth implant placement with simultaneous bone augmentation versus delayed implant placement after alveolar ridge preservation in bony defect sites in the esthetic region: A 5\u2010year randomized controlled trial"],"prefix":"10.1002","volume":"92","author":[{"given":"Kirsten W.","family":"Slagter","sequence":"first","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery, University Medical Center Groningen University of Groningen  Groningen The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1702-6031","authenticated-orcid":false,"given":"Henny J. 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