We discussed in Part 1 the difference between a temporary crown and a provisional restoration. In Part 2 we will go through the actual lab phase of how we fabricate a provional restoration.
We take a pre-op impression of the tooth/teeth we are going to prpare for a crown. Here is a picture of the patient before treatment.
In the lab we pour up a silicone model of the pre-op impression
A wax up of the broken or misaligned teeth on the preop model is made to the size, shape and contour that we want to achieve. Then we make a putty matrix of the altered cast.
A self cure composite is flowed into the putty matrix and the indexed silicone model is inserted and removed after material has set.
After trimming , finishing and polishing the provisional restoration is ready to be delivered to the patient.
By: Brian R. Guldbek, D.D.S.