Biaxial flexural strength of CAD/CAM ceramics.

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dc.contributor.authorBuso, L.
dc.contributor.authorOliveira-Júnior, O. B.
dc.contributor.authorHiroshi Fujiy, F.
dc.contributor.authorLeão Lombardo, G. H.
dc.contributor.authorRamalho Sarmento, H.
dc.contributor.authorCampos, F.
dc.contributor.authorAssunção Souza, R. O.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:25:54Z
dc.date.available2014-05-27T11:25:54Z
dc.date.issued2011-06-01
dc.description.abstractAim of the study was to evaluate the biaxial flexural strength of ceramics processed using the Cerec inLab system. The hypothesis was that the flexural strength would be influenced by the type of ceramic. Ten samples (ISO 6872) of each ceramic (N.=50/n.=10) were made using Cerec inLab (software Cerec 3D) (Ø:15 mm, thickness: 1.2 mm). Three silica-based ceramics (Vita Mark II [VM], ProCad [PC] and e-max CAD ECAD]) and two yttria-stabilized tetragonal-zirconia-polycrystalline ceramics (Y-TZP) (e-max ZirCad [ZrCAD] and Vita In-Ceram 2000 YZ Cubes [VYZ]) were tested. The samples were finished with wet silicone carbide papers up to 1200-grit and polished in a polishing machine with diamond paste (3 μm). The samples were then submitted to biaxial flexural strength testing in a universal testing machine (EMIC), 1 mm/min. The data (MPa) were analyzed using the Kruskal-Wallis and Dunn (5%) tests. Scanning electronic microscopy (SEM) was performed on a representative sample from each group. The values (median, mean±sd) obtained for the experimental groups were: VM (101.7, 102.1±13.65 MPa), PC (165.2, 160±34.7 MPa), ECAD (437.2, 416.1±50.1 MPa), ZrCAD (804.2, 800.8±64.47 MPa) and VYZ (792.7, 807±100.7 MPa). The type of ceramic influenced the flexural strength values (P=0.0001). The ceramics ECADa, e-max ZrCADa and VYZa presented similar flexural strength values which were significantly higher than the other groups (PCb and VM IIb), which were similar statistically between them (Dunn's test). The hypothesis was accepted. The polycrystalline ceramics (Y-TZP) should be material chosen for make FPDs because of their higher flexural strength values.en
dc.format.extent311-319
dc.identifierhttp://www.minervamedica.it/en/journals/minerva-stomatologica/article.php?cod=R18Y2011N06A0311
dc.identifier.citationMinerva stomatologica, v. 60, n. 6, p. 311-319, 2011.
dc.identifier.issn0026-4970
dc.identifier.scopus2-s2.0-80052356140
dc.identifier.urihttp://hdl.handle.net/11449/72485
dc.language.isoeng
dc.relation.ispartofMinerva stomatologica
dc.relation.ispartofsjr0,301
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectceramics
dc.subjectcomparative study
dc.subjectdental care
dc.subjectmaterials testing
dc.subjectsurface property
dc.subjectCeramics
dc.subjectDental Stress Analysis
dc.subjectMaterials Testing
dc.subjectSurface Properties
dc.titleBiaxial flexural strength of CAD/CAM ceramics.en
dc.typeArtigo

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