Solicitante: PENTRON CERAMICS INC
N. de solicitud: EP20070811406
N. de publicación: EP2056737 A2
Methods of forming a colored ceramic body or dental article are described that include: forming a body from a ceramic-containing powder; shaping the body into a desired shape; and firing the shaped body in an atmosphere comprising at least one coloring agent. Methods of forming a fully dense ceramic body that lacks discoloration, are also described which include: forming a body from a ceramic-containing powder; shaping the body into a desired shape; placing the shaped body in a firing atmosphere containing at least one impurity that promote discoloration of the ceramic body; (d) placing the ceramic body in proximity to an atmosphere powder; and firing the shaped body in proximity to an atmosphere powder; wherein the atmosphere powder acts as at least one of a barrier and a getter for the at least one impurity.
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