Avaliação da tenacidade à fratura de diferentes sistemas cerâmicos

Página do item simplificado
dc.contributor.authorPagani, Clovis [UNESP]
dc.contributor.authorMiranda, Carolina Baptista
dc.contributor.authorBottino, Marco Cícero
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-12-07T15:29:42Z
dc.date.available2015-12-07T15:29:42Z
dc.date.issued2003
dc.description.abstractAlthough ceramics present high compressive strength, they are brittle materials due to their low tensile strength so they have lower capacity to absorb shocks. This study evaluated the fracture toughness of different ceramic systems, which refers to the ability of a friable material to absorb defformation energy. Three ceramic systems were investigated. Ten cylindrical samples (5,0mm x 3,0mm), were obtained from each ceramic material as follows: G1- 10 samples of Vitadur Alpha (Vita-Zahnfabrik); G2- 10 samples of IPS Empress2 (Ivoclar-Vivadent); G3- 10 samples of In-Ceram Alumina (Vita-Zahnfabrik). Fracture toughness values were collected upon indentation tests that were performed under a heavy load. A microhardness tester (Digital Microhardness Tester FM) utilized a 500gf load cell during 10seconds to perform four impressions on each sample. Statistically significant results were observed (ANOVA and Kruskal-Wallis tests). In-Ceram Alumina presented the highest median toughness values (2,96N/m3/2), followed by Vitadur Alpha (2,08N/m3/2) and IPS Empress2 (1,05N/m3/2). It may be concluded that different ceramic systems present distinct fracture toughness values, thus In-Ceram is capable of absorbing superior stress when compared to Vitadur Alpha and IPS Empress2.en
dc.description.affiliationDepartamento de Odontologia Restauradora, Faculdade de Odontologia de São José dos Campos, UNESP.
dc.description.affiliationUnespDepartamento de Odontologia Restauradora, Faculdade de Odontologia de São José dos Campos, UNESP.
dc.format.extent69-75
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572003000100012
dc.identifier.citationJournal Of Applied Oral Science : Revista Fob, v. 11, n. 1, p. 69-75, 2003.
dc.identifier.doi10.1590/S1678-77572003000100012
dc.identifier.fileS1678-77572003000100012.pdf
dc.identifier.issn1678-7757
dc.identifier.lattes5130377144315365
dc.identifier.lattes9234456003563666
dc.identifier.orcid0000-0002-1074-5319
dc.identifier.pubmed21409342
dc.identifier.scieloS1678-77572003000100012
dc.identifier.urihttp://hdl.handle.net/11449/130841
dc.language.isopor
dc.publisherJournal Of Applied Oral Science : Revista Fob
dc.relation.ispartofJournal Of Applied Oral Science : Revista Fob
dc.relation.ispartofjcr1.709
dc.relation.ispartofsjr0,645
dc.rights.accessRightsAcesso aberto
dc.sourcePubMed
dc.subjectDental ceramicsen
dc.subjectFracture toughnessen
dc.subjectand Indentation methoden
dc.subjectCerâmicas odontológicaspt
dc.subjectTenacidade à fraturapt
dc.subjectMétodo da indentaçãopt
dc.titleAvaliação da tenacidade à fratura de diferentes sistemas cerâmicospt
dc.title.alternativeRelative fracture toughness of differents dental ceramicsen
dc.typeArtigo
unesp.author.lattes9234456003563666
unesp.author.lattes5130377144315365[1]
unesp.author.orcid0000-0002-1074-5319[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
S1678-77572003000100012.pdf
Tamanho:
160.92 KB
Formato:
Adobe Portable Document Format
Baixar

Coleções

Artigos - Odontologia Restauradora - ICT