ArticleJournal of dental sciences2025
Effects of various aging modes on the optical properties of zirconia with different yttria concentrations in coffee and tea.
Article in Journal of dental sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Physicochemical and mechanical comparison of denture base materials after artificial aging.BMC oral health · 2026Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background/purpose: The esthetic performance of dental zirconia may be affected by both material composition and environmental exposure. This study aimed to evaluate how different aging conditions-hydrothermal aging and thermal cycling-influenced the optical properties of dental zirconia containing varying yttria concentrations (3Y-TZP, 4Y-TZP, and 5Y-TZP) in coffee and tea. Materials and methods: A total of 120 zirconia specimens were prepared using three yttria concentrations. Each group was subjected to four artificial aging conditions: storage in coffee or tea at 37 °C for 1 and 6 months (hydrothermal aging), or 10,000 and 50,000 cycles of thermal cycling between 5 °C and 55 °C. Optical parameters (L∗, a∗, b∗) and color differences (ΔE Results: Zirconia with higher yttria content exhibited more pronounced color changes ( Conclusion: Both yttria concentration and aging conditions significantly influenced the color stability of zirconia. Hydrothermal aging had a greater impact than thermal cycling, especially in coffee. These findings suggest that material composition and exposure environment should be carefully considered when selecting zirconia for esthetic dental restorations.
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