{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T02:31:39Z","timestamp":1792117899382,"version":"4.4.0"},"reference-count":48,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2020,8,8]],"date-time":"2020-08-08T00:00:00Z","timestamp":1596844800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2020,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The concept of platform switching is widely applied in current implant dentistry; however, the influence on peri\u2010implant bone\u2010level alterations (\u0394IBL), especially in the field of implant overdentures (IODs), remains inconclusive. Therefore, the present study aimed to test the alternative hypothesis that there is an equivalent \u0394IBLs at platform\u2010switching and platform\u2010matching implant abutments in 2\u2010implant bar\u2010retained IODs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Two interforaminal implants were placed in 32 subjects, who were randomly assigned to either an immediate\u2010 or a 3\u2010month post\u2010placement loading group. Furthermore, one implant in each subject was randomly assigned to receive a platform\u2010switched abutment (test), and one a platform\u2010matching abutment (control). The implants were splinted with prefabricated, chairside customized bars. \u0394IBL was recorded by using customized radiograph holders at implant placement, implant loading, 3\u00a0months, 6\u00a0months, and 12\u00a0months after loading.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>After 1\u00a0year, equivalent \u0394IBL could be identified (test: \u22120.51\u00a0mm\u00a0\u00b1\u00a00.49 versus control: \u22120.56\u00a0mm\u00a0\u00b1\u00a00.52; <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001). \u0394IBL increased over time and was more pronounced in the delayed\u2010loaded implants (\u22120.87\u00a0mm\u00a0\u00b1\u00a00.61) relative to the immediately loaded implants (\u22120.35\u00a0mm\u00a0\u00b1\u00a00.43; <jats:italic>p<\/jats:italic>\u00a0=\u00a0.022).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The prosthetic concept of platform switching does not necessarily lead to reduced bone loss. Immediate\u2010loading of implants, primarily splinted with a bar, might be beneficial regarding peri\u2010implant bone\u2010level alterations over a short\u2010term period.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.13640","type":"journal-article","created":{"date-parts":[[2020,7,27]],"date-time":"2020-07-27T16:15:36Z","timestamp":1595866536000},"page":"968-979","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Platform switching in two\u2010implant bar\u2010retained mandibular overdentures: 1\u2010year results from a split\u2010mouth randomized controlled clinical trial"],"prefix":"10.1111","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1047-5571","authenticated-orcid":false,"given":"Samir","family":"Abou\u2010Ayash","sequence":"first","affiliation":[{"name":"Department of Reconstructive Dentistry and Gerodontology University of Bern Bern 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