Dental zirconia microwave-sintering followed by rapid cooling protocol

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Taubaté (UNITAU)-
Autor(es): dc.contributorEstrada Radialista Percy Lacerda-
Autor(es): dc.contributorWestern University-
Autor(es): dc.contributorInstituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBarchetta, Nayara Fernanda-
Autor(es): dc.creatorArata Found, Anelyse-
Autor(es): dc.creatorYoshito, Walter Kenji-
Autor(es): dc.creatorUssui, Valter-
Autor(es): dc.creatorLazar, Dolores Ribeiro Ricci-
Autor(es): dc.creatorBalducci, Ivan-
Autor(es): dc.creatorButler, Sheila-
Autor(es): dc.creatorSaavedra, Guilherme de Siqueira Ferreira Anzaloni-
Data de aceite: dc.date.accessioned2025-08-21T21:09:41Z-
Data de disponibilização: dc.date.available2025-08-21T21:09:41Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2023.106351-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301716-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301716-
Descrição: dc.descriptionObjectives: This study aimed to evaluate the effect of microwave sintering temperature and cooling rate (MS) on 3Y-TZP ceramics and its influence on the ceramic microstructure and mechanical properties. Specifically, to optimize the sintering process, reducing the total sintering time compared to conventional sintering. Materials and methods: Eighty-four pre-sintered Y-TZP discs (Vipi block Zirconn, VIPI) (ISO 6872) were divided into seven groups (n = 12) according to the sintering conditions: conventional sintering (CS) at 1530 °C for 120 min and microwave sintering at 1400 °C (MS1400) and 1450 °C (MS1450) for 15 min followed by different cooling conditions: rapid cooling (RC), cooling at 400 °C (C400) and 25 °C (C25). The specimens were submitted to apparent density measurements, X-ray diffraction analysis (XRD), scanning electron microscopy, and biaxial flexural strength test. Data was statistically analyzed through two-way ANOVA, Tukey, Sidak, Dunnett and Weibull (α = 0.05). Results: All MS1400 groups presented lower density values than the CS and MS1450 groups. Two-way ANOVA revealed that the MS temperature and cooling rate affected the biaxial flexural strength of the Y-TZP (p < 0.01). Group MS1400RC presented lower biaxial flexural strength values (681.9 MPa) than MS1450RC (824.7 MPa). The cooling rate did not statistically decrease the biaxial strength among the groups submitted to microwave sintering at 1450 °C. XRD analysis showed that the sintering and cooling temperature did not induce tetragonal to monoclinic phase transformation. Conclusions: Microwave sintering at 1450 °C for 15 min followed by rapid cooling can be a viable fast alternative protocol for Y-TZP sintering, compared with the conventional sintering, reducing the total sintering time by 75% and reducing the energy used for the sintering process without affecting the Y-TZP biaxial flexural strength and relative density compared to the conventional sintering. Moreover, the microwave technique promoted smaller grains and did not induce monoclinic phase formation.-
Descrição: dc.descriptionDepartment of Dentistry University of Taubaté (UNITAU), Rua Dos Operários, 09, Centro, SP-
Descrição: dc.descriptionDepartment of Dentistry University Center FUNVIC Estrada Radialista Percy Lacerda, Estr. Mun. Do Pinhão Do Borba, Bairro, 1000, SP-
Descrição: dc.descriptionDivision of Restorative Dentistry Schulich School of Medicine and Dentistry Western University-
Descrição: dc.descriptionInstituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Av. Prof. Lineu Prestes, 2242, Butantã, SP-
Descrição: dc.descriptionDepartment of Social Science and Pediatric Dentistry Institute of Science and Technology São Paulo State University (UNESP), Av. Francisco José Longo, 777, Jardim São Dimas, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, Av. Francisco José Longo, 777, Jardim São Dimas, SP-
Descrição: dc.descriptionDepartment of Social Science and Pediatric Dentistry Institute of Science and Technology São Paulo State University (UNESP), Av. Francisco José Longo, 777, Jardim São Dimas, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) Institute of Science and Technology, Av. Francisco José Longo, 777, Jardim São Dimas, SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of the Mechanical Behavior of Biomedical Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCeramic microwave sintering-
Palavras-chave: dc.subjectCooling rate-
Palavras-chave: dc.subjectDental materials-
Palavras-chave: dc.subjectMechanical strength-
Palavras-chave: dc.subjectMicrostructural analysis-
Título: dc.titleDental zirconia microwave-sintering followed by rapid cooling protocol-
Tipo de arquivo: dc.typelivro digital-
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