Aging behavior of commercial and synthesized dental Y-TZP ceramics

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dc.contributor.authorArata, Anelyse
dc.contributor.authorBastos Campos, Tiago Moreira
dc.contributor.authorBarros Machado, João Paulo
dc.contributor.authorYoshito, Walter Kenji
dc.contributor.authorUssui, Valter
dc.contributor.authorde Lima, Nelson Batista
dc.contributor.authorNisie Tango, Rubens [UNESP]
dc.contributor.authorRicci Lazar, Dolores Ribeiro
dc.contributor.institutionCidade Universitária
dc.contributor.institutionPraça Marechal-do-Ar Eduardo Gomes
dc.contributor.institutionNational Institute for Space Research (INPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:40:46Z
dc.date.available2018-12-11T16:40:46Z
dc.date.issued2015-01-01
dc.description.abstractYttria-stabilized tetragonal zirconia polycrystals (Y-TZP) is used for dental prosthodontics, however, it can present accelerated tetragonal to monoclinic phase transformation in oral environment. The aim of this study was to compare the behavior of a Y-TZP synthesized in laboratory by the coprecipitation method to a commercial Y-TZP, after hydrothermal aging in pressurized reactor (150°C/ 35 hours). The discs were sintered at 1520°C for two hours. The kinetics curve of phase transformation was determined through the data collect by XRD diffractograms treated by the Rietveld method. The experimental and commercial control groups did not present monoclinic phase. After 35 hours of aging, the experimental group presented 69% of monoclinic phase compared to 67% for the commercial group. Scanning electron microscopy and atomic force microscopy images suggested that the commercial group presented heterogeneity of grain size and that the experimental group was more homogeneous. All groups presented superficial degradation process.en
dc.description.affiliationMaterials Science and Technology Center (CCTM) Nuclear and Energy Research Institute – National Nuclear Energy Commission (IPEN – CNEN/SP Cidade Universitária, Av. Lineu Prestes, 2242
dc.description.affiliationInstituto Tecnológico de Aeronáutica (ITA) Praça Marechal-do-Ar Eduardo Gomes, 50, Vila das Acacias
dc.description.affiliationAssociated Laboratory of Sensors and Materials National Institute for Space Research (INPE), Avenida dos Atronautas, 1758, Jd. Granja
dc.description.affiliationDepartment of Dental Materials and Prosthodontics School of Dentistry Institute of Science and Technology UNESP - Univ Estadual Paulist, Avenida Engenheiro Francisco José Longo, 777, Jardim São Dimas
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics School of Dentistry Institute of Science and Technology UNESP - Univ Estadual Paulist, Avenida Engenheiro Francisco José Longo, 777, Jardim São Dimas
dc.format.extent297-302
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.820.297
dc.identifier.citationMaterials Science Forum, v. 820, p. 297-302.
dc.identifier.doi10.4028/www.scientific.net/MSF.820.297
dc.identifier.file2-s2.0-84955473999.pdf
dc.identifier.issn0255-5476
dc.identifier.scopus2-s2.0-84955473999
dc.identifier.urihttp://hdl.handle.net/11449/168323
dc.language.isoeng
dc.relation.ispartofMaterials Science Forum
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCoprecipitation
dc.subjectDegradation
dc.subjectPowder synthesis
dc.subjectRietveld method
dc.subjectY-TZP
dc.titleAging behavior of commercial and synthesized dental Y-TZP ceramicsen
dc.typeTrabalho apresentado em evento

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