Dental Ceramic Article, Process for Production and Use Thereof
Assignee3M Innovative Properties Company
InventorsMichael Jahns, Gallus Schechner
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Abstract
The invention describes a dental article comprising zirconium oxide and at least two different colouring substances A and B, substance A showing a light emission in the range of about 470 nm to about 510 nm and substance B showing a light absorption in the range from about 520 nm to about 750 nm. The invention also relates to different processes of producing the dental article e.g. by a process comprising a casting step, a pressing step, or an infiltration step and to the use of certain compositions containing either substance A or substance B for producing such a dental article.
Claims15
A dental ceramic article comprising zirconium oxide and at least two different colouring substances A and B, substance A showing a light emission in the range from about 470 nm to about 510 nm and substance B showing a light absorption in the range from about 520 nm to about 750 nm, the dental article being used as a dental support structure and not comprising a glass or glass ceramic material in an amount above about 10 wt.-%.
(canceled)
Dependencies are inferred from the claim text.