Biaxial flexure strength and physicochemical characterization of a CAD/CAM lithium disilicate ceramic: effect of etching time, silane, and adhesive applications

dc.contributor.authorSilva, Sarah Emille Gomes da
dc.contributor.authorAraújo, Gabriela Monteiro de
dc.contributor.authorSouza, Karina Barbosa [UNESP]
dc.contributor.authorMoura, Dayanne Monielle Duarte
dc.contributor.authorAurélio, Iana Lamadrid
dc.contributor.authorMay, Liliana Gressler
dc.contributor.authorVila-Nova, Taciana Emília Leite
dc.contributor.authorZhang, Yu
dc.contributor.authorSouza, Rodrigo Othávio de Assunção e
dc.contributor.institutionFederal University of Rio Grande Do Norte (UFRN)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionState University of Rio Grande Do Norte (UERN)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversity of Pernambuco (UPE)
dc.contributor.institutionUniversity of Pennsylvania
dc.date.accessioned2023-03-01T20:30:35Z
dc.date.available2023-03-01T20:30:35Z
dc.date.issued2022-01-01
dc.description.abstractObjective: To evaluate the effect of different acid etching time and bonding agent (silane and/or adhesive system) on biaxial flexural strength and physico-chemical properties of a lithium disilicate ceramic. Material and methods: One hundred twenty ceramic discs were made and divided into 8 groups (n = 15) according to factors “etching time” (20 and 120 s) with hydrofluoric acid (HF) and “bonding agent” (C, no bonding agent; S, silane, A, adhesive; and SA, silane + adhesive). After surface treatment, a resin cement layer was applied to the surface and all specimens were subjected to biaxial flexural strength (BFS) test with treated surfaces loaded in tension (1 mm/min). The Weibull analyses and complementary analyses were also performed. Statistical analysis was done with 2-way ANOVA and the Tukey test (α = 0.05). Results: ANOVA revealed that the factors “etching time” (p = 0.0003) and “bonding agent” (p = 0.007) were statistically significant. In the overall analysis, the HF120S group (272.02 ± 35.30A MPa) presented significantly higher BFS than that of HF120C (218.45 ± 17.15CD MPa) and HF20S (228.40 ± 37.83BCDMPa). On the other hand, the HF20A group (208.92 ± 31.16D MPa) had significantly lower BFS than HF120S (272.02 ± 35.30A), HF120A (254.42 ± 26.87ABC) and HF120SA (259.30 ± 36.55AB) groups (Tukey). The Weibull modulus (m) of all groups was significantly different from each other (p = 0.000). Conclusions: Regardless of etching time, the application of silane alone is sufficient to increase the flexural strength of glass ceramic, eliminating the need for the application of adhesive systems. Moreover, if only silane or adhesive is applied, 120-s HF application should increase the flexural resistance of the lithium disilicate ceramic. Clinical significance. Applications of adhesive systems after silanization can be suppressed from the surface treatment protocol of glass ceramics, since it does not improve their mechanical strength.en
dc.description.affiliationDepartment of Dentistry Federal University of Rio Grande Do Norte (UFRN), Av. Salgado FilhoLagoa Nova, RN, CEP
dc.description.affiliationDepartment of Dentistry Oral Science Federal University of Rio Grande Do Norte (UFRN), Av. Salgado FilhoLagoa Nova, RN. CEP
dc.description.affiliationInstitute of Science and Technology Univ Estadual Paulista - UNESP Francisco Jose Longo, Av. Eng, SP
dc.description.affiliationDepartment of Dentistry State University of Rio Grande Do Norte (UERN), Rua Almino Afonso, 478 - Centro - Mossoró/RN CEP: 59.610-210
dc.description.affiliationDepartment of Restorative Dentistry Federal University of Santa Maria (UFSM), Santa Maria
dc.description.affiliationSchool of Dentistry University of Pernambuco (UPE)
dc.description.affiliationSchool of Dental Medicine Department of Preventive and Restorative University of Pennsylvania
dc.description.affiliationUnespInstitute of Science and Technology Univ Estadual Paulista - UNESP Francisco Jose Longo, Av. Eng, SP
dc.identifierhttp://dx.doi.org/10.1007/s00784-022-04635-2
dc.identifier.citationClinical Oral Investigations.
dc.identifier.doi10.1007/s00784-022-04635-2
dc.identifier.issn1436-3771
dc.identifier.issn1432-6981
dc.identifier.scopus2-s2.0-85137006820
dc.identifier.urihttp://hdl.handle.net/11449/240736
dc.language.isoeng
dc.relation.ispartofClinical Oral Investigations
dc.sourceScopus
dc.subjectDental ceramics
dc.subjectFlexural strength
dc.subjectGlass–ceramics
dc.subjectSurface treatment
dc.titleBiaxial flexure strength and physicochemical characterization of a CAD/CAM lithium disilicate ceramic: effect of etching time, silane, and adhesive applicationsen
dc.typeArtigo

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