Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Federal de Juiz de Fora-
Autor(es): dc.contributorUniversidade Braz Cubas-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de Taubaté-
Autor(es): dc.creatorde LIMA, Leonardo Custódio-
Autor(es): dc.creatorMiranda, Jean Soares-
Autor(es): dc.creatorde CARVALHO, Ronaldo Luis Almeida-
Autor(es): dc.creatorBarcellos, Aline Serrado de Pinho-
Autor(es): dc.creatorAmaral, Marina-
Autor(es): dc.creatorKimpara, Estevão Tomomitsu-
Data de aceite: dc.date.accessioned2025-08-21T15:14:50Z-
Data de disponibilização: dc.date.available2025-08-21T15:14:50Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.4322/bds.2023.e3923-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307237-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307237-
Descrição: dc.descriptionObjective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin-E and metal-M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (α=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging.-
Descrição: dc.descriptionDepartamento de Odontologia Restauradora Faculdade de Odontologia Universidade de São Paulo, SP-
Descrição: dc.descriptionDepartamento de Odontologia Universidade Federal de Juiz de Fora, MG-
Descrição: dc.descriptionDepartamento de Odontologia Universidade Braz Cubas, SP-
Descrição: dc.descriptionDepartamento de Materiais e Dentários e Prótese Instituto de Ciência e Tecnologia Unesp, SP-
Descrição: dc.descriptionDepartamento de Odontologia Universidade de Taubaté, SP-
Descrição: dc.descriptionDepartamento de Materiais e Dentários e Prótese Instituto de Ciência e Tecnologia Unesp, SP-
Idioma: dc.languageen-
Relação: dc.relationBrazilian Dental Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAging-
Palavras-chave: dc.subjectCementation-
Palavras-chave: dc.subjectCeramics-
Palavras-chave: dc.subjectFlexural strength-
Palavras-chave: dc.subjectLithium disilicate-
Título: dc.titleInfluence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate-
Título: dc.titleInfluência do substrato, cimento e envelhecimento na resistência a flexão biaxial do dissilicato de lítio-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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