{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T05:22:03Z","timestamp":1791091323227,"version":"4.1.0"},"reference-count":40,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2011,3,1]],"date-time":"2011-03-01T00:00:00Z","timestamp":1298937600000},"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":[[2011,3]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> Early implant placement is one of the treatment options after tooth extraction. Implant surgery is performed after a healing period of 4 to 8 weeks and combined with a simultaneous contour augmentation using the guided bone regeneration technique to rebuild stable esthetic facial hard\u2010 and soft\u2010tissue contours.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> In this prospective study, 20 patients were treated with an implant\u2010born single crown and followed for 3 years. Clinical, radiologic, and esthetic parameters were recorded to assess treatment outcomes.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> At the 3\u2010year examination, all 20 implants were successfully integrated, demonstrating ankylotic stability and healthy peri\u2010implant soft tissues as documented by standard clinical parameters. Esthetic outcomes were assessed by the pink esthetic score (PES) and white esthetic score (WES) and confirmed pleasing results overall. WES values were slightly superior to PES values. Periapical radiographs showed minimal crestal bone loss around used bone\u2010level implants with a mean bone loss of 0.18 mm at 3 years. Only two implants revealed bone loss between 0.5 and 1.0 mm. One of these implants had minor mucosal recession &lt;1.0 mm.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> This prospective study evaluates the concept of early implant placement and demonstrated successful tissue integration for all 20 implants and stable bone\u2010crest levels around implant\u2013abutment interfaces according to the platform\u2010switching concept. The midterm 3\u2010year follow\u2010up revealed pleasing esthetic outcomes and stable facial soft tissues. The risk of mucosal recession was low, with only one patient showing minor recession of the facial mucosa. These encouraging results need to be confirmed with a 5\u2010year follow\u2010up examination.<\/jats:p>","DOI":"10.1902\/jop.2010.100408","type":"journal-article","created":{"date-parts":[[2010,9,10]],"date-time":"2010-09-10T10:15:47Z","timestamp":1284113747000},"page":"342-349","source":"Crossref","is-referenced-by-count":136,"title":["Stability of Contour Augmentation and Esthetic Outcomes of Implant\u2010Supported Single Crowns in the Esthetic Zone: 3\u2010Year Results of a Prospective Study With Early Implant Placement Postextraction"],"prefix":"10.1002","volume":"82","author":[{"given":"Daniel","family":"Buser","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia","family":"Wittneben","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael 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