The effect of speed sintering and hydrothermal aging on the biaxial flexural strength and microstructure of recent cubic zirconia material | ||
| Ain Shams Dental Journal | ||
| Volume 34, Issue 2, June 2024, Pages 232-240 PDF (2.41 M) | ||
| Document Type: Original articles | ||
| DOI: 10.21608/asdj.2024.285645.1265 | ||
| Authors | ||
| Ayman Mohamed Said* 1; Ghada Abdelfattah2; Maged Zohdy3; Tarek Salah4, 5 | ||
| 1Prosthodontics department, faculty of dentistry, badr university in cairo, cairo, egypt | ||
| 2Associate Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt. | ||
| 3Professor, department of fixed prosthodontics, faculty of dentistry, ain shams university, cairo,egypt | ||
| 4Professor, Department of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt. | ||
| 5Vice Dean, Postgraduate Affairs and Scientific Research, Faculty of Dentistry MIU, Egypt. | ||
| Abstract | ||
| Aim: To evaluate the effect of speed sintering protocol and hydrothermal aging on the biaxial flexural strength of recent cubic zirconia material. Materials and methods: Discs were prepared from recent cubic zirconia material, Katana UTML (K). The prepared discs were fabricated from milled cylinders. Prepared discs were divided according to sintering protocol applied, either a normal cycle (N) or a speed cycle (S). Half of the discs were subjected to biaxial flexural strength (BFS) test using a universal testing machine.the remaining discs were submitted to accelerated aging (A) for 5 hours and then subjected to biaxial flexural strength (BFS) test. Data collected and analyzed using one-way ANOVA. Scanning electron microscope was used for microstructure analysis. Results: Non-significant difference in (BFS) values were found between both normal and speed sintering protocols before and after subjecting to hydrothermal aging, The highest overall values were reported from KSA (2168± 212.4 MPa) . Average mean grain size values showed a reduction in size after subjecting to speed sintering protocol. Conclusion: Speed sintering protocols and hydrothermal aging did not report a significant difference in biaxial flexural strength mean values. Speed sintering cycles reduced the mean values of grain size. | ||
| Keywords | ||
| speed sintering; cubic zirconia; hydrothermal aging; flexural strength | ||
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