GRADIENT COMPOSITION ZIRCONIA DENTAL MATERIALS
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United States of America Patent
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Issued Date -
Nov 3, 2022
app pub date -
Aug 16, 2019
filing date -
Aug 16, 2019
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Provided are pre-sintered and sintered zirconia dental ceramic materials. The materials have a gradient in yttria content. The materials may have a gradient in one or more physical/mechanical property and/or one or more optical property. The materials may be made by mixing at least two zirconia ceramic powders having different yttria content. A sintered zirconia dental ceramic material may be in the form of a dental article.
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