{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T14:07:28Z","timestamp":1788876448364,"version":"build-2803163510"},"reference-count":53,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Oral Rehabilitation"],"published-print":{"date-parts":[[2007,4]]},"abstract":"<jats:p><jats:bold>Summary\u2002<\/jats:bold> This study evaluated the failure load of different zirconia\u2010based all\u2010ceramic fixed partial dentures (FPD) before and after artificial aging. Forty\u2010eight zirconia frameworks for three\u2010unit FPDs were fabricated using different manufacturing systems [(DCS), Procera (Nobel Biocare) and Cerec inLab (Sirona)], veneered using Vita VM9 (Vita Zahnfabrik) opaque ceramic and conventionally cemented on human teeth. The restorations were divided according to the system used for manufacturing the frameworks into three groups of 16 specimens each (DCS, Procera and Vita YZ\u2010Cerec). Half of each group was artificially aged through dynamic loading and thermal cycling, whereas, the other half was not subjected to artificial aging. Subsequently, all specimens were loaded occlusally until fracture occurred using a universal testing machine. Pair\u2010wise Wilcoxon rank tests were performed to test for differences in failure loads at a statistical significance level of 0\u00b705. All specimens subjected to artificial aging survived with no failures. The median (IQR\u2003=\u2003<jats:italic>x<\/jats:italic><jats:sub>0\u00b725<\/jats:sub>\u2013<jats:italic>x<\/jats:italic><jats:sub>0\u00b775<\/jats:sub>) failure loads (N) before and after artificial aging were, respectively, as follows: group DCS, 2131 (1948\u20132239) and 1797 (1590\u20132074); group Procera, 1684 (1615\u20131873) and 1394 (1275\u20131495); and group Vita YZ\u2010Cerec, 1845 (1621\u20131923) and 1625 (1521\u20131747). No significant differences were found for comparisons between different groups before artificial aging. After artificial aging, group Procera showed significantly smaller values than group DCS (<jats:italic>P<\/jats:italic>\u2003=\u20030\u00b7042). All tested restorations have the potential to withstand occlusal forces applied in the posterior region and can therefore represent interesting alternatives to replace metal\u2010ceramic restorations. Further assessments are needed before recommending these restorations for daily practice.<\/jats:p>","DOI":"10.1111\/j.1365-2842.2006.01705.x","type":"journal-article","created":{"date-parts":[[2007,3,2]],"date-time":"2007-03-02T16:32:21Z","timestamp":1172853141000},"page":"282-290","source":"Crossref","is-referenced-by-count":44,"title":["ZrO<sub>2<\/sub> three\u2010unit fixed partial dentures: comparison of failure load before and after exposure to a mastication simulator"],"prefix":"10.1111","volume":"34","author":[{"given":"W.","family":"ATT","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"GRIGORIADOU","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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