Today, I am going to talk a little bit about minimum prep veneers.At the end, I will highlight on the advantages or disadvantages if there is any of prep veneers.
First steps are pretty much similar to the no prep veneers. We take an impression of the teeth,send it to the laboratory technician for diagnostic wax- up and prep models fabrication. These two guides help us decide
where are we going to finish up our gingival limit as well as how much are we going to reduce the tissue from the outer surface of the teeth. Usually, the laboratory technician should mark the teeth on model to show us how much we should reduce the tissue to achieve the best result. If we make a putty matrix of the diagnostic wax-up and put it over the prepped teeth, we can see how thin the veneers are and how much we can take off tissue out of the facial surface. In minimum prep veneers. we eliminate tooth sensitivity if we stay within the enamel layer.
Now after preparation, we make a putty matrix if we did not make one yet on the wax-up model to make the temporary veneers from Bis-acrylic material( LUXATEMP) from Zenith DMG. Without removing them, we polish and finish. After we receive the final veneers from the laboratory, we remove the temporaries and put the final veneers.
If we compare no prep veneers with prep veneers, we can see that prep veneers give us more room for color masking. They have a flatter profile and natural contour. We can avoid post prep sensitivity in prep veneers if we stay as much as possible within the enamel layer.
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