Long Term Fatigue Behavior of Zirconia Based Dental Ceramics
Abstract
:1. Introduction
2. Results and Discussion
Test group | Initial flexure strength (MPa) | Flexure strength after cyclic loading (MPa) | Percentage of strength reduction in relation to polished specimens (1208 MPa) |
---|---|---|---|
Particle abrasion (50 µm) | 1131 ± 131 A | 655 ± 155 C | 45% |
Particle abrasion (110 µm) | 720 ± 187 B | 388 ± 193 D | 67% |
Grinding | 769 ± 166 B | 409 ± 188 D | 66% |
Polishing | 1208 ± 97 A | 748 ± 88 C | 38% |
3. Experimental Section
3.1. Preparation of the specimens
- 1)
- Particle abrasion with 110 μm aluminum oxide particle at 0.3 MPa pressure and 10 mm distance (P-G 400; Harnisch & Rieth, Winterbach, Germany).
- 2)
- Particle abrasion with 50 μm aluminum oxide particle at 0.15 MPa pressure and 10 mm distance (P-G 400).
- 3)
- Grinding with diamond coated points.
- 4)
- Polishing using 0.5 μm diamond paste. This group was used a control to measure the theoretical strength of the used zirconia.
3.2. Cyclic loading program
3.3. Flexure strength test
3.4. Statistical analysis
4. Conclusions
Acknowledgements
References
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Aboushelib, M.N. Long Term Fatigue Behavior of Zirconia Based Dental Ceramics. Materials 2010, 3, 2975-2985. https://doi.org/10.3390/ma3052975
Aboushelib MN. Long Term Fatigue Behavior of Zirconia Based Dental Ceramics. Materials. 2010; 3(5):2975-2985. https://doi.org/10.3390/ma3052975
Chicago/Turabian StyleAboushelib, Moustafa N. 2010. "Long Term Fatigue Behavior of Zirconia Based Dental Ceramics" Materials 3, no. 5: 2975-2985. https://doi.org/10.3390/ma3052975