One function of the Diagnostic Wax-up is that it helps many patients determine whether to pursue treatment because they can compare the waxed up model to their existing smile. Another important role of the diagnostic wax-up is in the fabrication of provisional restorations or temporaries. An impression of the wax-up is taken with a putty material. In the mouth, the temporaries can be contoured and customized to the patient’s facial features. Occlusion and phonetics can also be evaluated, and when these, along with esthetics, are deemed satisfactory, an impression can be made to communicate the proper size, shape, length, and form to the lab.