A contact colour for testing the accuracy of fit of crowns, inlays, onlays, telescoping crowns and clasps and the friction surface of debris. Applied to the test surface with a brush. The solvent evaporates in seconds, leaving a thin film, 3 microns thick. Arti-Spot can also be used to test for high spots on highly polished occlusal surfaces such as gold or ceramic. Can be easily removed after use.