Abstract:
A colour key system for the colour selection for dental restoration masses or artifical teeth comprises reference elements whose reference region may be modularly constructed by the user. A particularly simple handling for the user results when the reference region of the reference elements are constructed in two parts of a core part and a casing part. Such a two-part system following the natural tooth construction gives a large reproduction certainty and excellent aesthetic results.
Abstract:
Color evaluation of a color sample is effected by producing in a simultaneous field of vision a plurality of separate color comparison regions each differing in color slightly from one another and juxtaposed with a multiplicity of images of a single small area of a color sample. The color of the sample images can be compared simultaneously with the colors of the comparison regions and a color attribute of the comparison regions varied until visual correspondence is obtained between the sample color and one of the comparison regions.