Method to manufacture a colored blank, and blank

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United States of America Patent

PATENT NO 10441391
SERIAL NO

15464316

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Abstract

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The invention relates to a method for manufacturing a colored blank, which contains zirconium dioxide and is intended for the manufacture of a dental restoration, whereby raw materials in powder form, at least some of which contain one coloring substance each, are mixed with, zirconium dioxide as the main ingredient, the resulting mixture is pressed and subsequently subjected to at least one thermal treatment. To generate the desired fluorescence, it is intended that in the raw materials in powder form one uses as coloring substances at least terbium, erbium, cobalt, as well as one substance that generates a fluorescence effect in the dental restoration, however not iron, aside from naturally occurring impurities.

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Patent Owner(s)

Patent OwnerAddress
DENTSPLY SIRONA INC221 W PHILADELPHIA STREET SUITE 60W YORK PA 17401

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fecher, Stefan Johannesberg, DE 39 246
Kutzner, Martin Neuberg, DE 14 84
Oefner, Tanja Linsengericht, DE 3 16
Volkl, Lothar Goldbach, DE 21 163

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