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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/74929
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dc.contributor.authorÖzcan, Mutlu-
dc.contributor.authorMelo, Renata M.-
dc.contributor.authorSouza, Rodrigo O.A.-
dc.contributor.authorMachado, João P.B.-
dc.contributor.authorFelipe Valandro, Luiz-
dc.contributor.authorBotttino, Marco A.-
dc.date.accessioned2014-05-27T11:28:45Z-
dc.date.accessioned2016-10-25T18:46:01Z-
dc.date.available2014-05-27T11:28:45Z-
dc.date.available2016-10-25T18:46:01Z-
dc.date.issued2013-04-01-
dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2013.01.005-
dc.identifier.citationJournal of the Mechanical Behavior of Biomedical Materials, v. 20, p. 19-28.-
dc.identifier.issn1751-6161-
dc.identifier.issn1878-0180-
dc.identifier.urihttp://hdl.handle.net/11449/74929-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/74929-
dc.description.abstractThis study evaluated the effect of air-particle abrasion protocols on the biaxial flexural strength, surface characteristics and phase transformation of zirconia after cyclic loading. Disc-shaped zirconia specimens (Ø: 15mm, thickness: 1.2mm) (N=32) were submitted to one of the air-particle abrasion protocols (n=8 per group): (a) 50μm Al2O3 particles, (b) 110μm Al2O3 particles coated with silica (Rocatec Plus), (c) 30μm Al2O3 particles coated with silica (CoJet Sand) for 20s at 2.8bar pressure. Control group received no air-abrasion. All specimens were initially cyclic loaded (×20,000, 50N, 1Hz) in water at 37°C and then subjected to biaxial flexural strength testing where the conditioned surface was under tension. Zirconia surfaces were characterized and roughness was measured with 3D surface profilometer. Phase transformation from tetragonal to monoclinic was determined by Raman spectroscopy. The relative amount of transformed monoclinic zirconia (FM) and transformed zone depth (TZD) were measured using XRD. The data (MPa) were analyzed using ANOVA, Tukey's tests and Weibull modulus (m) were calculated for each group (95% CI). The biaxial flexural strength (MPa) of CoJet treated group (1266.3±158A) was not significantly different than that of Rocatec Plus group (1179±216.4A,B) but was significantly higher than the other groups (Control: 942.3±74.6C; 50μm Al2O3: 915.2±185.7B,C). Weibull modulus was higher for control (m=13.79) than those of other groups (m=4.95, m=5.64, m=9.13 for group a, b and c, respectively). Surface roughness (Ra) was the highest with 50μm Al2O3 (0.261μm) than those of other groups (0.15-0.195μm). After all air-abrasion protocols, FM increased (15.02%-19.25%) compared to control group (11.12%). TZD also showed increase after air-abrasion protocols (0.83-1.07μm) compared to control group (0.59μm). Air-abrasion protocols increased the roughness and monoclinic phase but in turn abrasion with 30μm Al2O3 particles coated with silica has increased the biaxial flexural strength of the tested zirconia. © 2013 Elsevier Ltd.en
dc.format.extent19-28-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectAir-abrasion-
dc.subjectBiaxial flexural strength-
dc.subjectSilica coating-
dc.subjectY-TZP-
dc.subjectZirconia-
dc.subject3D surface-
dc.subjectAir abrasion-
dc.subjectBi-axial flexural strength-
dc.subjectControl groups-
dc.subjectCyclic loadings-
dc.subjectMonoclinic phase-
dc.subjectMonoclinic zirconia-
dc.subjectRocatec-
dc.subjectSilica coatings-
dc.subjectSurface characteristics-
dc.subjectWeibull modulus-
dc.subjectXRD-
dc.subjectAbrasion-
dc.subjectAluminum-
dc.subjectAluminum coatings-
dc.subjectBending strength-
dc.subjectCyclic loads-
dc.subjectPhase transitions-
dc.subjectRaman spectroscopy-
dc.subjectSilica-
dc.subjectSurface roughness-
dc.subjectTribology-
dc.subjectWeibull distribution-
dc.subjectaluminum oxide-
dc.subjectsilicon dioxide-
dc.subjectzirconium oxide-
dc.subjectair particle abrasion protocol-
dc.subjectbiaxial fleural strength-
dc.subjectcontrolled study-
dc.subjectmethodology-
dc.subjectpressure-
dc.subjectpriority journal-
dc.subjectRaman spectrometry-
dc.subjectstrength-
dc.subjectX ray diffraction-
dc.subjectAir-
dc.subjectDental Etching-
dc.subjectDental Materials-
dc.subjectDental Stress Analysis-
dc.subjectElastic Modulus-
dc.subjectHardness-
dc.subjectMaterials Testing-
dc.subjectPhase Transition-
dc.subjectSilicon Dioxide-
dc.subjectStress, Mechanical-
dc.subjectSurface Properties-
dc.subjectTensile Strength-
dc.subjectZirconium-
dc.titleEffect of air-particle abrasion protocols on the biaxial flexural strength, surface characteristics and phase transformation of zirconia after cyclic loadingen
dc.typeoutro-
dc.contributor.institutionClinic for Fixed and Removable Prosthodontics and Dental Materials Science-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionDivision of Prosthodontics-
dc.contributor.institutionNational Institute of Spatial Research-
dc.description.affiliationUniversity of Zürich Dental Materials Unit, Center for Dental and Oral Medicine Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Plattenstrasse 11, CH-8032, Zurich-
dc.description.affiliationSão Paulo State University São José dos Campos Dental School Department of Dental Materials and Prosthodontics, 777 Eng. Franscisco José Longo Avenue, 12245-000 São José dos Campos SP-
dc.description.affiliationFederal University of Paraíba Department of Restorative Dentistry Division of Prosthodontics, 9216 Praia de Guajirú Avenue, 59092-220 Natal, RN-
dc.description.affiliationNational Institute of Spatial Research, 1758 Astronautas Avenue, 12227-010 São José dos Campos, SP-
dc.description.affiliationFederal University of Santa Maria Department of Restorative Dentistry Division of Prosthodontics, 1184 Marechal Floriano St., 97015-372 Santa Maria, RS-
dc.description.affiliationUnespSão Paulo State University São José dos Campos Dental School Department of Dental Materials and Prosthodontics, 777 Eng. Franscisco José Longo Avenue, 12245-000 São José dos Campos SP-
dc.identifier.doi10.1016/j.jmbbm.2013.01.005-
dc.identifier.wosWOS:000318455400003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of the Mechanical Behavior of Biomedical Materials-
dc.identifier.scopus2-s2.0-84874581307-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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