Step 4 – Wax Try-In
The 4th step in the creation of YOUR denture is the wax try-in. Here, we will ask that you return for your 2nd appointment, so that we might check the fit.
The base plates will have wax rims atop them, usually though without teeth. We will insert the wax denture(s) primarily to verify the bite is correct. Once verified and/or corrected, we will return to the lab and begin placing teeth into the denture, and carving / contouring the wax so that it will look like real gums.
Depending upon the confidence level of the technician that your denture is ready for processing, we sometimes will have you return for a second wax try-in.
Either way, prior to processing the denture, we will verify everything is correct, such as tongue movements, different sounds pronunciation such as “s”, “f”, “v.” We will assure you are not biting your cheeks or lips, indicative of insufficient overlap of the back teeth or front teeth respectively. We also wish to ascertain the lips are full and supported.
Once we are confident that all is as it should be, we will add an additional step, something few offices perform.
First, using the wax "denture" as a guide, we will perform one final impression. This impression compensates for any errors leading to this stage, such that when completed your denture will be as near perfect as humanly possible.
This of course means we must pour new models in the lab, and this is what very few offices bother doing. The significance here is the stone used is Zhermack Elite Model Type-III stone, whose accuracy is 99.96%. Adding in the error from the separating agent used (to separate the denture from the model following processing), THIS becomes the final accuracy of the denture.
The 1st wax try-in is often not done by certain denture mills.
The 2nd wax try in is seldom done by any of the denture mills, and often not even by general practices.
For exceptionally difficult cases I sometimes bring in the customer for even a 3rd wax try-in.
ONLY when we are ready will we process the denture.