{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T15:45:32Z","timestamp":1790610332756,"version":"4.1.0"},"reference-count":45,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2013,11,1]],"date-time":"2013-11-01T00:00:00Z","timestamp":1383264000000},"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":[[2013,11]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> Early implant placement with simultaneous contour augmentation is documented with short\u2010 and medium\u2010term studies. The long\u2010term stability of contour augmentation is uncertain.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> In this prospective, cross\u2010sectional study, 41 patients with an implant\u2010borne single crown were examined twice, in 2006 and 2010. Clinical, radiologic, and esthetic parameters were assessed at both examinations. In addition, a cone beam computed tomographic (CBCT) image was obtained during the second examination to assess the dimensions of the facial bone wall.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> All 41 implants demonstrated ankylotic stability without signs of peri\u2010implant infection at both examinations. The clinical parameters remained stable over time. Satisfactory esthetic outcomes were noted, as assessed by the pink and white esthetic score (PES\/WES) indices. Overall, the PES scores were slightly higher than the WES scores. None of the implants developed mucosal recession over time, as confirmed by values of the distance between implant shoulder and mucosal margin and cast measurements. The periapical radiographs yielded stable peri\u2010implant bone levels, with a mean distance between implant shoulder and first visible bone\u2010implant contact value of 2.18 mm. The CBCT analysis demonstrated a mean thickness of the facial bone wall \u22482.2 mm. In two implants (4.9%) no facial bone wall was detectable radiographically.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> This prospective cross\u2010sectional study demonstrates stable peri\u2010implant hard and soft tissues for all 41 implants examined and satisfactory esthetic outcomes overall. The follow\u2010up of 5 to 9 years confirmed again that the risk for mucosal recession is low with early implant placement. In addition, contour augmentation with guided bone regeneration was able to establish and maintain a facial bone wall in 95% of patients.<\/jats:p>","DOI":"10.1902\/jop.2013.120635","type":"journal-article","created":{"date-parts":[[2013,1,24]],"date-time":"2013-01-24T15:22:55Z","timestamp":1359040975000},"page":"1517-1527","source":"Crossref","is-referenced-by-count":180,"title":["Long\u2010Term Stability of Contour Augmentation With Early Implant Placement Following Single Tooth Extraction in the Esthetic Zone: A Prospective, Cross\u2010Sectional Study in 41 Patients With a 5\u2010 to 9\u2010Year Follow\u2010Up"],"prefix":"10.1002","volume":"84","author":[{"given":"Daniel","family":"Buser","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vivianne","family":"Chappuis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael 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