{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T08:59:16Z","timestamp":1790845156368,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2014,5,29]],"date-time":"2014-05-29T00:00:00Z","timestamp":1401321600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clin Implant Dent Rel Res"],"published-print":{"date-parts":[[2016,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>One possible complication of implant surgery in the posterior maxilla is the displacement of implants into the maxillary sinus.<\/jats:p><\/jats:sec><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To report on clinical and radiological findings and on biological, surgical, and biomechanical considerations in cases of implant displacement.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>This is a retrospective study of 21 patients referred to the <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>epartment of <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>ead and <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>eck <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>urgery, <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>econd <jats:styled-content style=\"fixed-case\">U<\/jats:styled-content>niversity of <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>aples, due to implants displaced into the maxillary sinus. Patient, implant, and treatment data were collected, and 1\u2010year follow\u2010up was made.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 24 displaced implants were diagnosed and surgically removed through an antrostomy in the lateral sinus wall. Implant displacement occurred after functional loading in only one case; in the remaining cases, displacement occurred either perioperatively or postoperatively prior to loading. Besides the displacement, eight patients suffered from maxillary sinusitis, treated with a <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>aldwell\u2010<jats:styled-content style=\"fixed-case\">L<\/jats:styled-content>uc operation. Healing was uneventful for all patients, and no sinusitis relapse or late postoperative complication was present at 1\u2010year follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>It is reasonable to affirm that the major cause of displacement of implants is related, most of the time, to incorrect treatment planning and\/or a poorly performed surgical procedure. When implant displacement occurs, the displaced foreign body has to be removed in order to avoid sinus pathology.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cid.12244","type":"journal-article","created":{"date-parts":[[2014,5,29]],"date-time":"2014-05-29T13:44:48Z","timestamp":1401371088000},"page":"62-72","source":"Crossref","is-referenced-by-count":42,"title":["Displacement of Dental Implants Into the Maxillary Sinus: A Retrospective Study of Twenty\u2010One Patients"],"prefix":"10.1111","volume":"18","author":[{"given":"Nicola","family":"Sgaramella","sequence":"first","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery Second University of Naples  Naples Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gianpaolo","family":"Tartaro","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery Second University of Naples  Naples 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