Colored glass-ceramic articles

U.S. Patent Number: 5387558

Abstract: This invention is directed to the formation of glass-ceramic articles which exhibit a yellow coloration in visible light and fluoresce with a yellow coloration while being exposed to ultraviolet radiation. The yellow coloration is produced through the incorporation of a color package comprising 0.05-0.5% V.sub.2 O.sub.5, 0.25-5% CeO.sub.2, and 0.1-1% Tb.sub.2 O.sub.3. When the glass-ceramic articles contain tetrasilicic fluormica as the predominant crystal phase, they are eminently suitable for use as dental prosthetic materials.

Inventors: Grossman; David G. (Corning, NY)

Assignee: Corning Incorporated (Corning, NY)

Application Number: 08/236,088

Issued: 1995-02-07

Expired: 2007-02-07

Classes: 501/3 ; 106/35; 501/57; 501/64; 501/69; 501/72

Field of search: 501/3,57,64,69,72 252/31.4H 106/35

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