The shade guides for the ceramic press and CAD materials facilitate the shade matching procedure. The shade guides and the individual shade tabs can be sterilized in an autoclave to prevent cross-contamination in the oral cavity. The shade tabs show the final shade, i.e. the shade of the material after the pressing or crystallization process. In this way, they can be used to check the shade and the quality of the crystallization process when using IPS e.max® CAD.