It is essential to understand the significance of the diagnostic wax-up. The diagnostic wax-up is a planning procedure that accurately shows the patient, dentist, and lab technician what is realistically attainable for the patient. When the wax-up is finished, it provides a tangible 3-dimensional model of the patient’s new teeth. In addition, the diagnostic wax-up can be used to create fully representative temporaries. After the dentist evaluates the temporaries for fit, the patient can try out the temporaries and assess how the new restorations look and feel.