dc.contributorUniv Groningen
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:28:45Z
dc.date.available2014-05-20T15:28:45Z
dc.date.created2014-05-20T15:28:45Z
dc.date.issued2006-11-01
dc.identifierDental Materials. Oxford: Elsevier B.V., v. 22, n. 11, p. 1029-1034, 2006.
dc.identifier0109-5641
dc.identifierhttp://hdl.handle.net/11449/38502
dc.identifier10.1016/j.dental.2005.11.025
dc.identifierWOS:000241746900008
dc.identifier9234456003563666
dc.description.abstractObjectives. The aim of this study was to evaluate the effect of mechanical cycling on the biaxial flexural strength of two densely sintered ceramic materials.Methods. Disc shaped zirconia (In-Ceram Zirconia) and high alumina (Procera AllCeram) ceramic specimens (diameter: 15 min and thickness: 1.2 mm) were fabricated according to the manufacturers' instructions. The specimens from each ceramic material (N = 40, n = 10/per group) were tested for flexural strength either with or without being subjected to mechanical cycling (20,000 cycles under 50 N load, immersion in distilled water at 37 degrees C) in a universal testing machine (1 mm/min). Data were statistically analyzed using two-way ANOVA and Tukey's test (alpha = 0.05).Results. High alumina ceramic specimens revealed significantly higher flexural strength values without and with mechanical cycling (647 +/- 48 and 630 +/- 143 MPa, respectively) than those of zirconia ceramic (497 +/- 35 and 458 +/- 53 MPa, respectively) (p < 0.05). Mechanical cycling for 20,000 times under 50 N decreased the flexural strength values for both high alumina andSignificance. High alumina ceramic revealed significantly higher mean flexural strength values than that of zirconia ceramic tested in this study either with or without mechanical cycling conditions. (C) 2005 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationDental Materials
dc.relation4.039
dc.relation2,106
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectalumina
dc.subjectceramics
dc.subjectflexural strength
dc.subjectin-ceram
dc.subjectmechanical cycling
dc.subjectProcera
dc.subjectzirconia
dc.titleEffect of mechanical cycling on the flexural strength of densely sintered ceramics
dc.typeArtículos de revistas


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