We were asked by one of our dentists to do a diagnostic wax up of the upper teeth from 6-6. The patient had a class III bite with a over jet and large anterior open bite. The dentist wanted us to close the bite as much as reasonably possible with porcelain veneers. We poured the study model impressions in hard stone and duplicated them.
We then mounted the master models on a Quickmaster articulator to establish the bite and check the vertical dimensions. We could see that we would need to ease the posterior teeth to close the bite a little. We then began the the Wax up. This was a difficult case because we did not want to make the veneers too long but still close the bite. We were also told the teeth would only be lightly prepared.
Diagnostic wax up
The master models which had been waxed up were returned to the dentist along with the duplicated models that had not been touched as to show a “before and after” treatment plan. This gives the patient a chance to check and approve the lenght and position of the teeth. The Patient was happy with the diagnostic wax ups and procceded with the treatment.
Fabrication of veneers
The Dentist then lightly prepared the labial/buccal surfaces of the upper teeth from the left first molar to the right first molar,the Second premolars had been previously removed. A silicone impression was taken using impregum material. We then poured a pinned working model, articulated this model to a Quickmaster articulator using a wax bite registration. We then took a silicone putty impression of the approved diagnostic wax up as a a reference tool. We use this when buiding up the porcelain so to match the diaganostic wax up. We then foiled the veneers and built the porcelain up using conventional techniques.