{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T05:48:55Z","timestamp":1790660935226,"version":"4.1.0"},"reference-count":27,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2020,10,6]],"date-time":"2020-10-06T00:00:00Z","timestamp":1601942400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Prosthodontics"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To assess the effect of yttria mol% concentration and material thickness on the biaxial fracture load (N) of zirconia with and without mastication simulation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Disk\u2010shaped specimens (N = 120) of 3 mol% yttria\u2010partially stabilized zirconia, 3Y\u2010PSZ (Katana High Translucent, Kuraray Noritake), 4 mol% yttria\u2010partially stabilized zirconia, 4Y\u2010PSZ (Katana Super Translucent Multi Layered) and 5 mol% Yttria\u2010partially stabilized zirconia, 5Y\u2010PSZ (Katana Ultra Translucent Multi Layered) were prepared to thicknesses of 0.7 and 1.2 mm. For each thickness, the biaxial fracture load (N) was measured with and without mastication simulation with 1.2 million cycles at a 110\u2010N load and simultaneous thermal cycling at 5\u00b0C to 55\u00b0C. The data were analyzed by three\u2010way Analysis of Variance (\u03b1 = 0.05) and Tukey\u2010Kramer adjusted multiple comparison test.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Yttria mol% concentration and material thickness had a statistically significant effect on the mean biaxial fracture load (F = 388.16, <jats:italic>p<\/jats:italic> &lt; 0.001 and F = 714.33, <jats:italic>p<\/jats:italic> &lt; 0.001 respectively). The mean biaxial fracture load ranged from the highest to the lowest; 3Y\u2010PSZ, 4Y\u2010PSZ, and 5Y\u2010PSZ (<jats:italic>p =<\/jats:italic> 0.012). The mean biaxial fracture load of the 1.2 mm thickness groups was significantly higher than 0.7 mm thickness at any given condition (<jats:italic>p =<\/jats:italic> 0.002). Not all specimens survived the mastication simulation protocol. Fifty percent of the 0.7\u2010mm\u2010thick 4Y\u2010PSZ specimens, 70% of the 0.7\u2010mm\u2010thick 5Y\u2010PSZ specimens and 20% of 1.2\u2010mm\u2010thick 5Y\u2010PSZ specimens fractured during mastication simulation. Mastication simulation had no statistically significant effect on the biaxial fracture load (F = 1.24, <jats:italic>p<\/jats:italic> = 0.239) of the survived specimens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Lowering yttria mol% concentration and increasing material thickness significantly increases the fracture load of zirconia. At 0.7 mm thickness, only 3Y\u2010PSZ survived masticatory simulation. A minimum material thickness of 1.2 mm is required for 4Y\u2010PSZ or 5Y\u2010PSZ.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.13242","type":"journal-article","created":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T19:33:27Z","timestamp":1598384007000},"page":"787-791","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["Fracture Load of Different Zirconia Types: A Mastication Simulation Study"],"prefix":"10.1111","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1665-5151","authenticated-orcid":false,"given":"Awab","family":"Abdulmajeed","sequence":"first","affiliation":[{"name":"Department of Prosthetic Dentistry and Stomatognathic Physiology Institute of Dentistry University of Turku  Turku Finland"},{"name":"Department of General Practice School of Dentistry Virginia Commonwealth University  Richmond VA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3826-316X","authenticated-orcid":false,"given":"Taiseer","family":"Sulaiman","sequence":"additional","affiliation":[{"name":"Division of Comprehensive Oral Health Adams School of Dentistry University of North Carolina  Chapel Hill NC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1111-1657","authenticated-orcid":false,"given":"Aous","family":"Abdulmajeed","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry and Stomatognathic Physiology Institute of Dentistry University of Turku  Turku Finland"},{"name":"Department of General Practice School of Dentistry Virginia Commonwealth University  Richmond VA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1209-9362","authenticated-orcid":false,"given":"Sompop","family":"Bencharit","sequence":"additional","affiliation":[{"name":"Department of General Practice School of Dentistry Virginia Commonwealth University  Richmond VA"},{"name":"Department of Biomedical Engineering College of Engineering Virginia Commonwealth University  Richmond VA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1325-4555","authenticated-orcid":false,"given":"Timo","family":"N\u00e4rhi","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry and Stomatognathic Physiology Institute of Dentistry University of Turku  Turku Finland"},{"name":"City of Turku Welfare Division  Turku Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,10,6]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2007.05.007"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/258703a0"},{"key":"e_1_2_7_4_1","first-page":"183","article-title":"10\u2010year clinical outcomes of fixed dental prostheses with zirconia frameworks","volume":"14","author":"Sax C","year":"2011","journal-title":"Int J Comput Dent"},{"key":"e_1_2_7_5_1","first-page":"441","article-title":"Three generations of zirconia: from veneered to monolithic","volume":"48","author":"Stawarczyk B","year":"2017","journal-title":"Quintessence Int"},{"key":"e_1_2_7_6_1","first-page":"4","article-title":"The material, its evolution, and composition","volume":"39","author":"Zirconia Burgess JO.","year":"2018","journal-title":"Compend Contin Educ Dent"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022034517737483"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2016.09.025"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00784-006-0095-7"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s007840050109"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2017.04.013"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2017.09.006"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dental.2007.05.005"},{"key":"e_1_2_7_14_1","volume-title":"Dentistry\u2014Ceramic Materials","author":"ISO. 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