Dental porcelain shading method

摘要

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 (L1) when formed into a least porcelain layer. The second powder has lightness value (L2) when formed into a less opaque ceramic layer. The third powder has a lightness value (L3) 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 (L1) are less than 2.5 CIE L*a*b units.