{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:50:50Z","timestamp":1785405050566,"version":"3.56.0"},"reference-count":34,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2018,7,20]],"date-time":"2018-07-20T00:00:00Z","timestamp":1532044800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Shanghai Summit and Plateau Discipline and by Science and Technology Development Fund of Pudong New Area","award":["PKJ2015-Z05"],"award-info":[{"award-number":["PKJ2015-Z05"]}]},{"name":"key project of scientific research innovation, Shanghai municipal Education Commission","award":["No.12ZZ116"],"award-info":[{"award-number":["No.12ZZ116"]}]},{"DOI":"10.13039\/501100012150","name":"Shanghai Leading Academic Discipline Project","doi-asserted-by":"crossref","award":["T0202"],"award-info":[{"award-number":["T0202"]}],"id":[{"id":"10.13039\/501100012150","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Prosthodontics"],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To evaluate the influence of specimen thickness and low\u2010temperature degradation (LTD) on yttrium\u2010stabilized tetragonal zirconia polycrystals (Y\u2010TZP).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Thin discs of Y\u2010TZP from four manufacturers were sintered according to each manufacturer's recommendations, cut into 23 mm (length) \u00d7 4 mm (width) \u00d7 0.8 mm\/1.5 mm (thickness) specimens, artificially aged under standard autoclave sterilization conditions (34\u00b0C at 0.2 MPa for 10 and 20 hours), and finally ground and polished. Tetragonal to monoclinic transformation was confirmed by X\u2010ray diffraction (XRD) analysis. Flexural strength was measured by 3\u2010point bending tests and Vickers hardness measurements. Fracture surfaces were examined by scanning electron microscopy (SEM).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>SEM investigation revealed that with increasing aging time, the surface defects and grain size increased, particularly in the 20\u2010hour group. Compared with the 1.5 mm group, the 0.8 mm group showed more significant defects, irrespective of aging time. The flexural strengths of Y\u2010TZP materials decreased with a decrease in the thickness. Moreover, LTD of Y\u2010TZP can cause significant tetragonal to monoclinic transformation, which also results in a statistically significant decrease in the flexural strength.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A thinner Y\u2010TZP specimen was likely to present surface defects and microcracks after aging. In addition, the flexural strengths decreased with a decrease in the thickness, a notable fact for further studies.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.12946","type":"journal-article","created":{"date-parts":[[2018,7,20]],"date-time":"2018-07-20T09:55:02Z","timestamp":1532080502000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Effect of Aging Time and Thickness on Low\u2010Temperature Degradation of Dental Zirconia"],"prefix":"10.1111","volume":"28","author":[{"given":"Yongxiang","family":"Zhuang","sequence":"first","affiliation":[{"name":"Department of Prosthodontics, Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine  Shanghai P.R. 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