ArticleInternational journal of dentistry2026
Effect of Surface Adjustment and Hydrothermal Aging on the Mechanical Behavior and Microstructure of Zirconia With Different Yttria Contents.
Article in International journal of dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Effect of Surface Adjustment and Hydrothermal Aging on the Mechanical Behavior and Microstructure of Zirconia With Different Yttria Contents.International journal of dentistry · 2026Article
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3 authors.
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Abstract
Objectives: This in vitro study evaluated the effects of restorative surface adjustment and simulated hydrothermal aging on the microstructure and biaxial flexural strength of computer-aided design (CAD)/CAM zirconia with different yttria contents, including conventional 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) and high-translucency zirconia (5Y-PSZ and 6Y-PSZ). Methods: Disc-shaped specimens (12 mm diameter × 1.2 mm thickness; Results: Surface adjustment significantly reduced surface roughness. Biaxial flexural strength increased significantly in 3Y-TZP and showed a less pronounced response in 5Y-PSZ, whereas no significant differences were observed in 6Y-PSZ. Hydrothermal aging did not significantly affect surface roughness, hardness, grain size, or biaxial flexural strength under the applied conditions. No monoclinic reflections were detected by qualitative XRD. However, SEM revealed localized grain-boundary microcracking and surface degradation in aged 3Y-TZP. Conclusion: Finishing and polishing (FP) improved the biaxial flexural strength of 3Y-TZP and moderately enhanced that of 5Y-PSZ, whereas 6Y-PSZ showed limited sensitivity to surface adjustment. Simulated hydrothermal aging did not significantly compromise the mechanical performance or phase stability of the evaluated zirconia.
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