Effect of Two Kinds of Rare Earth Oxides on Zirconia Restoration

Abstract:

Objective: To evaluate the colouration of zirconia ceramic by adding two kinds of rare earth oxides. Methods: Added different concentrations of Fe₂O₃ and CeO₂ in tetragonal zirconia poly crystals stabilized with 3Y-TZP powder compacted at 200MPa using cold isostatic pressure, and fully sinter. The chromaticity of sintered bodies was measured with spectrophotometer. Results: self-colored zirconia by two kinds of rare earth oxides: The lightness of zirconia by adding cerium oxides was about 85 and a* decreased slightly. The color shifted to more yellow-green color. The chroma of the ceramics became more intensity, the lightness decreased with the increasing of the content of ferrum oxides and the color change to red-yellow direction. Conclusion: Zirconia ceramic could be colorized by Fe₂O₃ and CeO₂.

• Periodical: Key Engineering Materials (Volume 591)
• Pages: 113-116
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.591.113
• Online since: November 2013
• Authors: Jian Feng Chen, Rui Jie Dang, Li Sheng Zhao, Bin Deng, Bin Gu, Yuan Fu Yi, Huai Xiu Lu, Ning Wen
• Keywords: Rare Earth Oxides, Self-Colored Zirconia, Spectrophotometer

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