Effective treatment requires proper diagnosis. Diagnosis requires both clinical and radiological evaluation, while examining casts and diagnostic waxing are necessary when we have significant works in the mouth.  The examining casts provide us with the chance to examine information in a patient's mouth without his normal presence as much as we choose, whilst the diagnostic waxing allows us and the patient the opportunity to see the actual result of the procedure we intended to do and agree about our future actions together. It is an extraordinary diagnostic and predictive tool with no special high price for patients who do not want question marks and want predictable aesthetic results of high quality.