Optical coherence tomography (OCT) for the analysis of zirconia crystalline phase transformation

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorCidade Universitária “Armando de Salles Oliveira”-
Autor(es): dc.contributorThe University of Western Ontario-
Autor(es): dc.contributorUniversity of Toronto-
Autor(es): dc.contributorNational Institute for Space Research INPE-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorArata Found, Anelyse-
Autor(es): dc.creatorDe Pretto, L. R.-
Autor(es): dc.creatorUssui, V.-
Autor(es): dc.creatorLima, N. B.-
Autor(es): dc.creatorDe Souza, G. M.-
Autor(es): dc.creatorMachado, J. P.B.-
Autor(es): dc.creatorTango, R. N.-
Autor(es): dc.creatorFreitas, A. Z.-
Autor(es): dc.creatorLazar, D. R.R.-
Data de aceite: dc.date.accessioned2025-08-21T20:10:04Z-
Data de disponibilização: dc.date.available2025-08-21T20:10:04Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.mtla.2023.101825-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301280-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301280-
Descrição: dc.descriptionThis study aimed to validate the Optical coherence tomography (OCT) for the analysis of the transformed zone of two dental zirconia-based materials after hydrothermal ageing and correlate the values with biaxial flexural strength. Kinetics of tetragonal to monoclinic phase transformation (t→m) was calculated. X-ray diffraction (XRD) results showed a sigmoidal transformation rate over time due to the limited X-ray maximum penetration depth. Scanning electron microscope (SEM) and OCT showed a linear relationship between the thickness of the transformed layer and the ageing time. The apparent activation energy was 104.5 kJ/mol and 106.7 kJ/mol (SEM) and 106 kJ/mol and 99.4 kJ/mol (OCT) for the infrastructure and monolithic dental zirconia, respectively. Mechanical strength decreased after 150 h. of ageing at 150 °C for both materials showing a correlation with the depth of the transformed zone observed by OCT. Therefore, both monoclinic phase percentage and the depth of the transformed layer are critical concerning zirconia mechanical properties upon hydrothermal ageing. OCT is a non-destructive, fast, innovative, and accurate method for the analysis of zirconia's t→m phase transformation depth kinetics after hydrothermal ageing.-
Descrição: dc.descriptionFaculty of Dentistry, University of Toronto-
Descrição: dc.descriptionNuclear and Energy Research Institute IPEN-CNEN/SP Cidade Universitária “Armando de Salles Oliveira”, 2242 Prof. Lineu Prestes Avenue, SP-
Descrição: dc.descriptionDivision of Restorative Dentistry Schulich School of Medicine and Dentistry The University of Western Ontario-
Descrição: dc.descriptionFaculty of Medicine and Dentistry University of Toronto, 124 Edward St, Toronto, ON-
Descrição: dc.descriptionAssociated Laboratory for Sensors and Materials National Institute for Space Research INPE, 1758 Astronautas Avenue, Jardim da Granja, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics UNESP Sao Paulo State University - Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue, Jardim São Dimas, SP-
Descrição: dc.descriptionCenter for Lasers and Applications Nuclear and Energy Research Institute IPEN-CNEN/SP Cidade Universitária “Armando de Salles Oliveira”, 2242 Prof. Lineu Prestes Avenue, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics UNESP Sao Paulo State University - Institute of Science and Technology, 777 Eng. Francisco José Longo Avenue, Jardim São Dimas, SP-
Idioma: dc.languageen-
Relação: dc.relationMaterialia-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHydrothermal ageing-
Palavras-chave: dc.subjectMechanical properties-
Palavras-chave: dc.subjectPhase transformation kinetics-
Palavras-chave: dc.subjectTransformed zone-
Palavras-chave: dc.subjectYttria-stabilized zirconia polycrystal-
Título: dc.titleOptical coherence tomography (OCT) for the analysis of zirconia crystalline phase transformation-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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