Patent ID: 8315806

Claim:
A method for determining the color effect of a series of layers in teeth or dental materials, wherein the remission of the multilayer system is calculated by means of forward Monte Carlo simulation of intrinsic optical parameters dispersion coefficient μ s , anisotropy factor g and absorption coefficient of the different materials, calculated by inverse Monte Carlo simulation, taking into consideration refractive index n, thickness d of the respective layer of the materials as well as dispersion phase function of the individual materials and the color effect determined from the remission, characterized in that the intrinsic parameters dispersion coefficient μ s , anisotropy factor g and absorption coefficient of each of the materials are first calculated on the basis of a layer thickness of material enabling transmission of light and that a corrected absorption coefficient μ ak is then calculated by inverse Monte Carlo simulation on the basis of the remission of the respective material of an optically dense layer having a thickness d D , the corrected absorption coefficient μ ak as the absorption coefficient forming the basis for calculating the remission and the color effect of the multilayer system; wherein the intrinsic optical parameters are determined on the basis of spectrometric measurements.