A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 19/00 (2006.01) A61C 19/10 (2006.01) A61C 13/08 (2006.01)
Patent
CA 2593823
The invention relates to a dental colour system comprising primary and mixed colours with assigned coordinates in the CIElab colour space, in which the colours of natural teeth are essentially located on coordinates within an ellipsoid-shaped space, which is assigned a longitudinal axis. In order for the colour system to consist of a small number of primary and mixed colours and to allow an optimum colour adaptation to the natural teeth surrounding the dental prosthesis, it is proposed that the primary colours consist of first primary colours and at least one group of second primary colours, that the coordinates of the first primary colours be positioned on the longitudinal axis of the ellipsoid-shaped space or on a base line extending from light to dark in the CIElab space, that the coordinates of at least one group of second primary colours be positioned in a plane that perpendicularly intersects the longitudinal axis or base line, and that the coordinates of mixed colours be intersection points of first and second straight lines, whereby at least one first straight line extends parallel to the longitudinal axis or base line and the respective second straight line is a connection between the coordinates of the first primary colour and the second primary colour.
Krumbholz Klaus
Cameron Ip
Degudent Gmbh
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