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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampBarreto, Suelem Chasse-
dc.contributor.authorunicampLima, Renally Bezerra Wanderley e-
dc.contributor.authorunicampAguiar, Flavio Henrique Baggio-
dc.contributor.authorunicampPaulillo, Luis Alexandre Maffei Sartini-
dc.typeArtigopt_BR
dc.titleMechanical properties of aged yttria-stabilized tetragonal zirconia polycrystal after abrasion with different aluminum oxide particlespt_BR
dc.contributor.authorBarreto, S.C.-
dc.contributor.authorLima, R.B.W.-
dc.contributor.authorAguiar, F.H.B.-
dc.contributor.authorSantos, C.T.D.-
dc.contributor.authorPaulillo, L.A.M.S.-
dc.contributor.authorde Souza, G.M.D.-
dc.subjectZircônia tetragonal estabilizada por ítriopt_BR
dc.subjectÓxido de alumíniopt_BR
dc.subject.otherlanguageYttria stabilized tetragonal zirconiapt_BR
dc.subject.otherlanguageAluminum oxidept_BR
dc.description.abstractA consensus on the benefits of airborne-particle abrasion of zirconia with alumina particles of different sizes is still lacking. Larger particle size may improve micromechanical retention but may generate deep microcracks on the zirconia surface. The purpose of this in vitro study was to evaluate the effect of different size of Al2O3 particles used for surface abrasion on the mechanical properties of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP). Sixty Y-TZP specimens were divided into 6 groups according to the treatment: control (without treatment) or airborne-particle abrasion with Al2O3 particles (45 μm or 150 μm). Half the specimens were stored for 24 hours in water while the other half was exposed to 1.5×106 mechanical cycles before flexural strength analysis at 1 mm/min crosshead speed. Specimens were also characterized by micro-Raman spectroscopy and X-ray diffraction (XRD) to evaluate the crystalline composition. The data were subjected to 2-way ANOVA and Tukey HSD test (α=.05). Airborne-particle abrasion with alumina (P=.030) and mechanical fatigue (P<.001) had a significant effect on flexural strength. Specimens abraded with 45-μm Al2O3 particles (847 ±204 MPa) presented higher flexural strength than those of the control group (670 ±210 MPa). The size of the alumina particles was not significant for flexural strength. Flexural resistance (664 MPa) significantly decreased after mechanical fatigue. All groups showed only the tetragonal phase on the micro-Raman spectra, which was confirmed by XRD. Airborne-particle abrasion with smaller Al2O3 particles increased the flexural strength on Y-TZP without causing phase transformation. However, flexural strength was decreased after mechanical fatigue.pt_BR
dc.relation.ispartofJournal of prosthetic dentistrypt_BR
dc.relation.ispartofabbreviationJ. prosthet. dent.pt_BR
dc.publisher.cityPhiladelphia, PApt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2020-
dc.date.monthofcirculationJan.pt_BR
dc.language.isoengpt_BR
dc.rightsFechadopt_BR
dc.sourceSCOPUSpt_BR
dc.identifier.issn0022-3913pt_BR
dc.identifier.eissn1097-6841pt_BR
dc.identifier.doi10.1016/j.prosdent.2019.10.027pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0022391319307310pt_BR
dc.date.available2020-06-04T19:33:16Z-
dc.date.accessioned2020-06-04T19:33:16Z-
dc.description.provenanceSubmitted by Cintia Oliveira de Moura (cintiaom@unicamp.br) on 2020-06-04T19:33:15Z No. of bitstreams: 0. Added 1 bitstream(s) on 2020-09-03T11:55:44Z : No. of bitstreams: 1 2-s2.0-85077630844.pdf: 994767 bytes, checksum: 6904291ca6a43f22881944847b6faf49 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-06-04T19:33:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2020en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/342709-
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.departmentsem informaçãopt_BR
dc.contributor.departmentDepartamento de Odontologia Restauradorapt_BR
dc.contributor.departmentDepartamento de Odontologia Restauradorapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.identifier.source2-s2.0-85077630844pt_BR
dc.creator.orcid0000-0001-8085-1275pt_BR
dc.creator.orcid0000-0003-4477-7850pt_BR
dc.creator.orcid0000-0003-3389-5536pt_BR
dc.creator.orcidsem informaçãopt_BR
dc.type.formArtigopt_BR
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