It appears that you are currently in USA.
The VITA Bleachedguide 3D-MASTER is the best way to plan and monitor tooth whitening processes. It has a logical structure, similar to that of the VITA SYSTEM 3D-MASTER, based on the three parameters of brightness (value), chroma (saturation) and hue (color).
In addition, the 29 shade levels defined by the American Dental Association (ADA) are integrated in the VITA Bleachedguide 3D-MASTER. The VITA Bleachedguide 3D-MASTER uses this globally recognized standard for shade level assessment and is therefore recommended for every dental professional.