Diagnostic Wax-ups are a valuable tool because they accurately show the patient, dentist and lab technician what is realistically available for the patient. The Diagnostic Wax-up also helps many patients determine if they'll pursue treatment, by comparing this Wax-up model to their existing smile. For this reason, all Diagnostic Wax-ups should be fabricated from white stone models with white wax to produce the most lifelike result possible.