{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T15:52:56Z","timestamp":1790351576724,"version":"4.1.0"},"reference-count":60,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2016,5,6]],"date-time":"2016-05-06T00:00:00Z","timestamp":1462492800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Academic Center for Dentistry Amsterdam (ACTA)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2017,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess implant survival rates and peri\u2010implant bone loss of 2 titanium\u2013zirconium implants supporting maxillary overdentures at 1\u00a0year of loading.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>Twenty maxillary edentulous patients (5 women and 15 men) being dissatisfied with their complete dentures were included. In total, 40 diameter\u2010reduced titanium\u2013zirconium implants were placed in the anterior maxilla. Local guided bone regeneration (<jats:styled-content style=\"fixed-case\">GBR<\/jats:styled-content>) was allowed if the treatment did not compromise implant stability. Following 3 to 5\u00a0months of healing, implant\u2010supported overdentures were inserted on two ball anchors. Implants and overdentures were assessed at 1, 2, 4, and 8\u00a0weeks after implant insertion and 2, 4, and 12\u00a0months after insertion of overdentures (baseline). Standardized radiographs were taken at implant loading and 1\u00a0year. Implant survival rates and bone loss were the primary outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Nineteen patients (1 dropout) with 38 implants were evaluated at a mean follow\u2010up of 1.1\u00a0years (range 1.0\u20131.7\u00a0years). One implant failed resulting in an implant survival rate of 97.3%. There was a significant peri\u2010implant bone loss of the implants at 1\u00a0year of function (mean, 0.7\u00a0mm, SD = 1.1\u00a0mm; median: 0.48\u00a0mm, <jats:styled-content style=\"fixed-case\">IQR<\/jats:styled-content> = 0.56\u00a0mm).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>There was a high 1\u2010year implant survival rate for edentulous patients receiving 2 maxillary implants and ball anchors as overdenture support. However, several implants exhibited an increased amount of bone loss of more than 2\u00a0mm. Overdentures supported by 2 maxillary implants should thus be used with caution as minimally invasive treatment for specific patients encountering problems with their upper dentures until more long\u2010term data is available.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.12863","type":"journal-article","created":{"date-parts":[[2016,5,6]],"date-time":"2016-05-06T08:49:31Z","timestamp":1462524571000},"source":"Crossref","is-referenced-by-count":12,"title":["One\u2010year results of maxillary overdentures supported by 2 titanium\u2013zirconium implants \u2013 implant survival rates and radiographic outcomes"],"prefix":"10.1111","volume":"28","author":[{"given":"Anja","family":"Zembic","sequence":"first","affiliation":[{"name":"Department of Oral Implantology and Prosthetic Dentistry Academic Center for Dentistry Amsterdam (ACTA) Move Research Institute Amsterdam The Netherlands"},{"name":"Clinic of Fixed and Removable Prosthodontics and Dental Material Science University of Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali","family":"Tahmaseb","sequence":"additional","affiliation":[{"name":"Department of Oral Implantology and Prosthetic Dentistry Academic Center for Dentistry Amsterdam (ACTA) Move Research Institute Amsterdam The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald E.","family":"Jung","sequence":"additional","affiliation":[{"name":"Clinic of Fixed and Removable Prosthodontics and Dental Material Science University of Zurich Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Wismeijer","sequence":"additional","affiliation":[{"name":"Department of Oral Implantology and Prosthetic Dentistry Academic Center for Dentistry Amsterdam (ACTA) Move Research Institute Amsterdam The 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