CCM によるセラミッククラウン切縁部の色調構築

抄録

In order to establish the progressive Computer Color Matching (CCM) system for various restorations, a more precise method for incisal tooth color needs to be developed. The purpose of this study is the assessment of a newly developed CCM system for incisal tooth color. To reproduce the wide range of incisal tooth colors with numerous properties of translucency and chromaticity, six kinds of ceramics (two non-colored ceramics and four colored ceramics) were used, and colorimetric theories were applied to predict the incisal tooth color and free standing condition. The optimum scattering coefficients and absorbing coefficients for this CCM system were determined, and the precision of color reproducibility for the five kinds of ceramic targets and shade guides was analyzed. The color difference dE between the CCM sample and the target was under 3.5 for ceramic targets, and was under 3.0 for shade guides. Therefore, it can be said that the newly developed CCM system is an excellent color reproduction system for incisal tooth color, and has a high precision of color reproducibility.