Flexural Strength of Glass-Infiltrated Zirconia/Alumina-Based Ceramics and Feldspathic Veneering Porcelains

Página do item simplificado
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorSalazar-Marocho, Susana M. [UNESP]
dc.contributor.authorLeite, Fabiola P. P. [UNESP]
dc.contributor.authorVasquez, Vanessa C. [UNESP]
dc.contributor.authorValandro, Luiz Felipe [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Santa Maria (UFSM)
dc.date.accessioned2014-05-20T14:05:03Z
dc.date.available2014-05-20T14:05:03Z
dc.date.issued2009-07-01
dc.description.abstractPurpose: To compare the flexural strength of two glass-infiltrated high-strength ceramics and two veneering glass-ceramics.Materials and Methods: Four ceramic materials were tested: two glass-infiltrated high-strength ceramics used as framework in metal-free restorations [In-Ceram Zirconia IZ (Gr1) and In-Ceram Alumina IA (Gr2)], and two glass-ceramics used as veneering material in metal-free restorations [Vita VM7 (Gr3) and Vitadur-alpha (Gr4)]. Bar specimens (25 x 5 x 2 mm(3)) made from core ceramics, alumina, and zirconia/alumina composites were prepared and applied to a silicone mold, which rested on a base from a gypsum die material. The IZ and IA specimens were partially sintered in an In-Ceram furnace according to the firing cycle of each material, and then were infiltrated with a low-viscosity glass to yield bar specimens of high density and strength. The Vita VM7 and Vitadur-alpha specimens were made from veneering materials, by vibration of slurry porcelain powder and condensation into a two-part brass Teflon matrix (25 x 5 x 2 mm(3)). Excess water was removed with absorbent paper. The veneering ceramic specimens were then removed from the matrix and were fired as recommended by the manufacturer. Another ceramic application and sintering were performed to compensate the contraction of the feldspar ceramic. The bar specimens were then tested in a three-point bending test.Results: The core materials (Gr1: 436.1 +/- 54.8; Gr2: 419.4 +/- 83.8) presented significantly higher flexural strength (MPa) than the veneer ceramics (Gr3: 63.5 +/- 9.9; Gr4: 57.8 +/- 12.7).Conclusion: In-Ceram Alumina and Zirconia were similar statistically and more resistant than VM7 and Vitadur-alpha.en
dc.description.affiliationSão Paulo State Univ, Sao Jose dos Campos Dent Sch, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniversidade Federal de Santa Maria (UFSM), Sch Dent, Dept Restorat Dent Prosthodont, BR-97015372 Santa Maria, RS, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Sao Jose dos Campos Dent Sch, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.format.extent417-420
dc.identifierhttp://dx.doi.org/10.1111/j.1532-849X.2009.00462.x
dc.identifier.citationJournal of Prosthodontics-implant Esthetic and Reconstructive Dentistry. Malden: Wiley-blackwell, v. 18, n. 5, p. 417-420, 2009.
dc.identifier.doi10.1111/j.1532-849X.2009.00462.x
dc.identifier.issn1059-941X
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/22811
dc.identifier.wosWOS:000207914500008
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Prosthodontics-implant Esthetic and Reconstructive Dentistry
dc.relation.ispartofjcr1.745
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFlexural strengthen
dc.subjectzirconiaen
dc.subjectaluminaen
dc.subjectglass-ceramicen
dc.titleFlexural Strength of Glass-Infiltrated Zirconia/Alumina-Based Ceramics and Feldspathic Veneering Porcelainsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Materiais Odontológicos e Prótese - ICT