The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 1996
Filed:
Jun. 09, 1994
Applicant:
Inventor:
Carolyn M Kramer, Moorestown, NJ (US);
Assignee:
Dentsply Research & Development Corp., Milford, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
A61C / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
427-229 ; 4274194 ; 4332031 ;
Abstract
The invention provides a method for the preparation of porcelain dental restorations. First, second and third powders are provided in labeled containers. The first powder has a lightness value (L.sub.1) when formed into a least porcelain layer. The second powder has lightness value (L.sub.2) when formed into a less opaque ceramic layer. The third powder has a lightness value (L.sub.3) when formed into most opaque ceramic layer. The third lightness value is greater than the second lightness value, which is greater than the first lightness value. The lightness value lightness value (L.sub.1) are less than 2.5 CIE L*a*b units.