{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T23:09:24Z","timestamp":1792019364224,"version":"4.4.0"},"reference-count":60,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2020,10,15]],"date-time":"2020-10-15T00:00:00Z","timestamp":1602720000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100005036","name":"Universitetet i Bergen","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005036","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["European J Oral Sciences"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:p>Higher yttria content enhances the translucency and appearance of dental zirconia materials. Alterations in material composition also affect mechanical properties. The aim of this study was to compare the fracture load after artificial short\u2010term aging of monolithic, full\u2010contour zirconia crowns with different amounts of yttria\u2010stabilization. Sixty crowns (thirty super high translucent crowns (5Y\u2010Z) and thirty high translucent crowns (3Y\u2010Z)) were produced to fit a model of a premolar with a shallow chamfer preparation. The crowns were cemented with self\u2010adhesive resin cement on composite abutments. For each zirconia type, three groups of crowns (<jats:italic>n<\/jats:italic>\u00a0=\u00a010) were allocated to: (i) cyclic loading (200\u00a0N, 1\u00a0Hz, 30,000 cycles), (ii) hydrothermal aging (3\u00a0\u00d7\u00a020\u00a0min, 134\u00b0C 3.2\u00a0bar), or (iii) no treatment (control). Surviving crowns from the aging process were quasistatically loaded until fracture. The 3Y\u2010Z crowns had statistically significantly higher fracture values (3,449\u00a0N) than the 5Y\u2010Z crowns (1,938\u00a0N). The aging procedures did not affect load at fracture. Fractographic analysis showed that fractures started either at the crown margin or at the occlusal intaglio area. Higher yttria content leads to a reduction in material strength and damage tolerance, and this should be reflected in recommendations for clinical use.<\/jats:p>","DOI":"10.1111\/eos.12739","type":"journal-article","created":{"date-parts":[[2020,10,15]],"date-time":"2020-10-15T11:48:33Z","timestamp":1602762513000},"page":"526-534","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Effect of artificial aging on high translucent dental zirconia: simulation of early failure"],"prefix":"10.1111","volume":"128","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6567-6499","authenticated-orcid":false,"given":"Anneli","family":"Skjold","sequence":"first","affiliation":[{"name":"Department of Clinical Dentistry Faculty of Medicine University of Bergen Bergen Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Schriwer","sequence":"additional","affiliation":[{"name":"Department of Clinical Dentistry Faculty of Medicine University of Bergen Bergen Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nils R.","family":"Gjerdet","sequence":"additional","affiliation":[{"name":"Department of Clinical Dentistry Faculty of Medicine University of Bergen Bergen Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7134-6485","authenticated-orcid":false,"given":"Marit","family":"\u00d8ilo","sequence":"additional","affiliation":[{"name":"Department of Clinical Dentistry Faculty of Medicine University of Bergen Bergen 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