{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T12:26:03Z","timestamp":1777811163014,"version":"3.51.4"},"reference-count":9,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2000,6,1]],"date-time":"2000-06-01T00:00:00Z","timestamp":959817600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Dent Res"],"published-print":{"date-parts":[[2000,6]]},"abstract":"<jats:p>\n                    We hypothesize that the fracture resistance of alumina core\/porcelain veneer disks increases and that crack initiation shifts from veneer to core as the core\/veneer thickness ratio (t\n                    <jats:sub>c<\/jats:sub>\n                    \/t\n                    <jats:sub>v<\/jats:sub>\n                    ) increases from 0.5\/1.0 to 1.3\/0.2, or as the elastic modulus of the supporting substrate (E\n                    <jats:sub>s<\/jats:sub>\n                    ) to which it is resin-bonded increases from 5.1 to 226 GPa. When supported by a low-modulus substrate, disks with low tc\/tv ratios exhibited cracks in the veneer and within the core, while those with high t\n                    <jats:sub>c<\/jats:sub>\n                    \/t\n                    <jats:sub>v<\/jats:sub>\n                    ratios demonstrated core cracks, but not veneer cracks. None of the disks supported by Ni-Cr alloy (E = 226 GPa) exhibited core cracks. These results support the hypothesis that the crack initiation site shifts as the t\n                    <jats:sub>c<\/jats:sub>\n                    \/t\n                    <jats:sub>v<\/jats:sub>\n                    ratio increases, but the increase in Es did not affect the crack initiation site. This study suggests that the t\n                    <jats:sub>c<\/jats:sub>\n                    \/t\n                    <jats:sub>v<\/jats:sub>\n                    ratio is the dominant factor that controls the failure initiation site in bilayered ceramic disks.\n                  <\/jats:p>","DOI":"10.1177\/00220345000790060801","type":"journal-article","created":{"date-parts":[[2009,1,8]],"date-time":"2009-01-08T19:39:42Z","timestamp":1231443582000},"page":"1398-1404","source":"Crossref","is-referenced-by-count":78,"title":["Crack Initiation Modes in Bilayered Alumina\/Porcelain Disks as a Function of Core\/Veneer Thickness Ratio and Supporting Substrate Stiffness"],"prefix":"10.1177","volume":"79","author":[{"given":"N.","family":"Wakabayashi","sequence":"first","affiliation":[{"name":"First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.J.","family":"Anusavice","sequence":"additional","affiliation":[{"name":"Department of Dental Biomaterials, College of Dentistry, University of Florida, Gainesville, FL 32610-0446"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2000,6,1]]},"reference":[{"key":"atypb1","volume-title":"Statview 4.1 user's guide","author":"Abacus Concepts","year":"1992"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1109\/SBEC.1997.583280"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1016\/0022-3913(89)90184-4"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1177\/00220345950740060301"},{"key":"atypb5","first-page":"462","volume":"6","author":"Scherrer SS","year":"1993","journal-title":"Int J Prosthodont"},{"key":"atypb6","first-page":"27","volume":"11","author":"Tsai YL","year":"1998","journal-title":"Int J Prosthodont"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1016\/0109-5641(94)90022-1"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1111\/j.1151-2916.1996.tb07922.x"},{"key":"atypb9","first-page":"183","volume":"11","author":"Zeng K.","year":"1998","journal-title":"Int J Prosthodont"}],"container-title":["Journal of Dental Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00220345000790060801","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00220345000790060801","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T21:01:59Z","timestamp":1777496519000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/00220345000790060801"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,6]]},"references-count":9,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2000,6]]}},"alternative-id":["10.1177\/00220345000790060801"],"URL":"https:\/\/doi.org\/10.1177\/00220345000790060801","relation":{},"ISSN":["0022-0345","1544-0591"],"issn-type":[{"value":"0022-0345","type":"print"},{"value":"1544-0591","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,6]]}}}