Non-Pre-Colored Multi-Layer Zirconia Dental Blank that has a Gradual Change in Chroma through a Thickness After Sintering
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Feb 23, 2012
filing date -
Feb 23, 2012
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Abandoned
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Abstract
A dental block for producing a dental prosthesis comprises a green body including zirconia and having a chemical composition including increasing amounts of yttria through a thickness of the green body. The green body is substantially white with a substantially consistent optical characteristic of chroma across the thickness, and is subsequently millable and sinterable to form the dental prosthesis with an optical characteristic of decreasing chroma through a thickness of the dental prosthesis.
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