Comparison between different fracture toughness techniques in zirconia dental ceramics (2022)
- Authors:
- Autor USP: RIBEIRO, SEBASTIAO - EEL
- Unidade: EEL
- DOI: 10.1002/jbm.b.35137
- Assunto: CERÂMICA
- Keywords: ceramic; fracture toughness; single-edge-V-notched beam (SEVNB); Vickers indentation (IF)
- Agências de fomento:
- Language: Inglês
- Abstract: Vickers indentation (IF) and single-edge-V-notched beam (SEVNB), to measure the fracture toughness (KIC) of zirconia-based dental ceramics and mathematical models were proposed to establish a correlation between both. Zirconia (ZrO2) stabilized with 3 mol. % of Y2O3 (3Y-TZP) and 5 mol% of Y2O3 (5Y-PSZ) were compacted (n = 42) and sintered for 2 h at different temperatures (1475°C, 1500°C, 1550°C, or 1600°C). After sintering, they were characterized by relative density using the ASTM C373-88 standard, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The average grain size was measured according to the ASTM E1382-97 standard. The fracture toughness (KIC) was determined using two methods: Vickers indentation fracture toughness (KIC-IF): method based on mathematical modeling that considers the parameters used for the Vickers hardness test and Fracture toughness by the single-edge-V-notch-beam (KIC-SEVNB): method proposed by ISO 23146:08. The main phases of the 3Y-TZP and 5Y-PSZ ceramics were ZrO2-tetragonal and ZrO2-cubic, respectively. The 3Y-TZP specimens showed equiaxed grains with average grain sizes ranging from 0.55 to 0.79 μm. The grain sizes of 5Y-PSZ of specimens sintered at 1475°C and 1600°C were 0.62 and 2.32 μm, respectively. For all ceramics the crack size ratio was c/a < 2.5, suggesting a Palmqvist-type crack system. The fracture toughness measured by the Vickers indentation method (KIC-IF) and by the SEVNB method (KIC-SEVNB) was the same when the experimental data were fit to a mathematical model.
- Imprenta:
- Publisher: John Wiley & Sons
- Publisher place: Hoboken
- Date published: 2022
- Source:
- Título: Journal of biomedical materials research part b-applied biomaterials
- ISSN: 1552-4973
- Volume/Número/Paginação/Ano: v.111, n.1, p.103-116, 2022
- Este artigo NÃO possui versão em acesso aberto
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Status: Nenhuma versão em acesso aberto identificada -
ABNT
ALVES, Manuel Fellipe Rodrigues Pais et al. Comparison between different fracture toughness techniques in zirconia dental ceramics. Journal of biomedical materials research part b-applied biomaterials, v. 111, n. 1, p. 103-116, 2022Tradução . . Disponível em: https://doi.org/10.1002/jbm.b.35137. Acesso em: 15 mar. 2026. -
APA
Alves, M. F. R. P., Santos, C. dos, Elias, C. N., Amarante, J. E. V., & Ribeiro, S. (2022). Comparison between different fracture toughness techniques in zirconia dental ceramics. Journal of biomedical materials research part b-applied biomaterials, 111( 1), 103-116. doi:10.1002/jbm.b.35137 -
NLM
Alves MFRP, Santos C dos, Elias CN, Amarante JEV, Ribeiro S. Comparison between different fracture toughness techniques in zirconia dental ceramics [Internet]. Journal of biomedical materials research part b-applied biomaterials. 2022 ;111( 1): 103-116.[citado 2026 mar. 15 ] Available from: https://doi.org/10.1002/jbm.b.35137 -
Vancouver
Alves MFRP, Santos C dos, Elias CN, Amarante JEV, Ribeiro S. Comparison between different fracture toughness techniques in zirconia dental ceramics [Internet]. Journal of biomedical materials research part b-applied biomaterials. 2022 ;111( 1): 103-116.[citado 2026 mar. 15 ] Available from: https://doi.org/10.1002/jbm.b.35137 - Effect of heating rate on the shrinkage and microstructure of liquid phase sintered SiC ceramics
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