The system has receiving elements (20, 22), in which tooth samples (30) are linearly arranged, where the receiving elements have corresponding groups (0-5, 32) of tooth samples provided adjacent to each other. Specific groups (0-5) of tooth samples have same brightness and same shade, and the remaining groups (32) have same brightness and different shades. Tooth samples having different brightness, identical shade and/or identical chroma are arranged in a third receiving element.