{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:47:11Z","timestamp":1774572431818,"version":"3.50.1"},"reference-count":61,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2022,11,22]],"date-time":"2022-11-22T00:00:00Z","timestamp":1669075200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP18K17088"],"award-info":[{"award-number":["JP18K17088"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clin Implant Dent Rel Res"],"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and purpose<\/jats:title><jats:p>Zirconia abutments have been widely adopted in clinical implant practice. The unique mechanical properties of zirconia may significantly affect the long\u2010term prognosis of implant treatments. The purpose of this study was to investigate the influence of abutment material on implant deformation and fracture resistance of internal conical connection implant\u2013abutment complexes of two diameters after standardized artificial aging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Thirty original abutments (one\u2010piece titanium, one\u2010piece zirconia, zirconia with alloy base) with two diameters (regular, narrow) were connected to internal conical connection implants and subjected to a standardized artificial aging process consisting of thermal cycling and mechanical cyclic loading. Microcomputed tomography (\u03bcCT) scans of implant bodies were performed before and after aging. 3\u2010dimensional images of implant bodies were generated from the \u03bcCT scans and aligned for before and after aging to calculate the volumetric deformation amount. Finally, fracture resistance was measured using a mechanical static loading test for the surviving aged and 30 brand\u2010new specimens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All specimens survived artificial aging. No significant difference in implant deformation was found in the regular groups (<jats:italic>p\u00a0=\u00a00.095<\/jats:italic>). In narrow groups, the one\u2010piece zirconia group showed significantly less deformation (<jats:italic>p\u2009&lt;\u20090.0001<\/jats:italic>). For fracture resistance, no significant decrease was observed after aging in any group (<jats:italic>p\u2009&gt;\u20090.05<\/jats:italic>). One\u2010piece zirconia abutments showed significantly lower strength than the other two materials for both diameters (<jats:italic>p\u2009&lt;\u20090.0001<\/jats:italic>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In the regular diameter system, abutment material had no significant influence on the tested mechanical property degradation after simulated long\u2010term oral use. The mechanical performance of narrow diameter one\u2010piece zirconia abutments differed from the other two materials. For optimal performance, one\u2010piece zirconia abutments should be adopted only in anterior regions.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cid.13157","type":"journal-article","created":{"date-parts":[[2022,11,23]],"date-time":"2022-11-23T04:24:41Z","timestamp":1669177481000},"page":"107-117","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Implant deformation and implant\u2013abutment fracture resistance after standardized artificial aging: An in vitro study"],"prefix":"10.1111","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1877-9764","authenticated-orcid":false,"given":"Zhihao","family":"Zhai","sequence":"first","affiliation":[{"name":"Department of Fixed Prosthodontics Osaka University Graduate School of Dentistry  Suita 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