Effect of glazing application side and mechanical cycling on the biaxial flexural strength and Weibull characteristics of a Y-TZP ceramic
| Autor: | Carolina Machado Martinelli LOBO, Sâmia Carolina Mota Cavalcanti SACORAGUE, Nathalia Ramos da SILVA, Anna Karina Figueiredo COSTA, Larissa Marcia Martins ALVES, Marco Antônio BOTTINO, Mutlu ÖZCAN, Rodrigo Othávio de Assunção e SOUZA, Renata Marques de MELO |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Journal of Applied Oral Science, Vol 28 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1678-7765 1678-7757 |
| DOI: | 10.1590/1678-7757-2020-0438 |
| Popis: | Abstract Glaze application on monolithic zirconia (Y-TZP) can be a practical approach to improve the mechanical properties of this material. Objective Our study evaluated the effect of glazing side and mechanical cycling on the biaxial flexure strength (BFS) of a Y-TZP. Methodology Eighty sintered Y-TZP discs (Ø:12 mm; thickness: 1.2 mm - ISO 6872) were produced and randomly assigned into eight groups (n=10), according to the factors “glazing side” (control – no glazing; GT – glaze on tensile side; GC – glaze on compression side; GTC – glaze on both sides) and “mechanical aging” (non-aged and aged, A – mechanical cycling: 1.2×106, 84 N, 3 Hz, under water at 37°C). Specimens were subjected to BFS test (1 mm/min; 1,000 Kgf load cell) and fractured surfaces were analyzed by stereomicroscopy and SEM. Hsueh’s rigorous solutions were used to estimate the stress at failure of glazed specimens. Two-way ANOVA, Tukey’s test (5%), and Weibull analysis were performed. Results The “glazing side”, “mechanical aging” and the interaction of the factors were significant (p |
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