EFFECT OF SURFACE TREATMENT ON FLEXURAL STRENGTH AND SUBCRITICAL CRACK GROWTH OF LITHIUM DISILICATE: AN IN VITRO STUDY

Página do item simplificado
dc.contributor.authorDE CARVALHO, Ronaldo Luís Almeida
dc.contributor.authorMiranda, Jean Soares
dc.contributor.authorRamos, Nathália de Carvalho
dc.contributor.authorWeitzel, Isabela Sandim Souza Leite
dc.contributor.authorAmaral, Marina
dc.contributor.authorKimpara, Estevão Tomomitsu [UNESP]
dc.contributor.institutionCentro Universitário Braz Cubas
dc.contributor.institutionUniversidade Federal de Juiz de Fora
dc.contributor.institutionUniversidade São Francisco: Bragança Paulista
dc.contributor.institutionUniversidade de Taubate
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:07:18Z
dc.date.available2023-07-29T16:07:18Z
dc.date.issued2023-01-20
dc.description.abstractAlternative surface treatments have been proposed for the cementation of lithium disilicate ceramics aiming to improve adhesive and flexural strength under fatigue. This study aimed to evaluate the slow crack growth (SCG) parameters of the lithium disilicate ceramic after hydrofluoric acid (HF) etching or air abrasion (AB) as surface treatments. Ceramic discs were treated with HF (5%, 20 s) or AB (30 µm silica-modified alumina particles, 2.8 bar, 10 mm distance, 15 s), and received a layer of resin cement. The surface roughness after surface treatment was evaluated (n = 5). Samples were tested in a piston-on-three-ball assembly to evaluate the flexural strength (n = 20), inert strength (n = 25), and to determine SCG parameters n and D (n = 35). The highest roughness (p < 0.01) was observed in the AB group, with the highest reliability according to the Weibull analysis, but the lowest SCG susceptibility. Flexural (p = 0.03) and inert strength (p < 0.01) were the greatest in the HF group. Despite exhibiting lower strength than 5% HF, air abrasion may be an alternative for the surface treatment of lithium disilicate surfaces, indicating the best prognosis over time.en
dc.description.affiliationCentro Universitário Braz Cubas, São Paulo
dc.description.affiliationDepartment of Dentistry Universidade Federal de Juiz de Fora, Minas Gerais
dc.description.affiliationUniversidade São Francisco: Bragança Paulista
dc.description.affiliationDepartment of Dentistry Universidade de Taubate, São Paulo
dc.description.affiliationDepartment of Dental Materials and Prosthesis Institute of Science and Technology Universidade Estadual Paulista, São Paulo
dc.description.affiliationUnespDepartment of Dental Materials and Prosthesis Institute of Science and Technology Universidade Estadual Paulista, São Paulo
dc.identifierhttp://dx.doi.org/10.14393/BJ-v39n0a2023-61416
dc.identifier.citationBioscience Journal, v. 39.
dc.identifier.doi10.14393/BJ-v39n0a2023-61416
dc.identifier.issn1981-3163
dc.identifier.issn1516-3725
dc.identifier.scopus2-s2.0-85149222347
dc.identifier.urihttp://hdl.handle.net/11449/249717
dc.language.isoeng
dc.relation.ispartofBioscience Journal
dc.sourceScopus
dc.subjectCeramic
dc.subjectFatigue
dc.subjectFlexural strength
dc.subjectSurface properties
dc.titleEFFECT OF SURFACE TREATMENT ON FLEXURAL STRENGTH AND SUBCRITICAL CRACK GROWTH OF LITHIUM DISILICATE: AN IN VITRO STUDYen
dc.typeArtigo

Arquivos

Coleções

Artigos - Materiais Odontológicos e Prótese - ICT