Veneers can be fabricated using 3 different techniques:
- Refractory die technique
- Platinum foil technique
- Press technique
Refractory die technique
When using the refractory die technique very high aesthetics can be achieved by
using feldspatic porcelains. It involves stratification techniques where internal
color build up and layering of different layers of dentin, enamels and internal
colors are placed by an experienced technician to achieve an excellent result. The
technique is cumbersome and once the refractory material was removed no corrections
can be made.
Platinum foil technique
This technique requires the use of a very thin layer of platinum foil to be folded
over the prepared die. There is a specific way to fold the foil so it keeps its shape.
Vitalab uses the Tanaka press to ensure the close adaptation of the foil to the
die for accuracy. The stratification technique is the same as with the refractory
die technique. Once the foil is removed no modifications that require additional
firings can be made as this will distort the porcelain.
The press technique is much more forgiving as far as changes are concerned. The
technique requires a wax-up of the restoration and pressing with a monochromatic
pressing material that usually has the desired basic shade. The veneer is then
cut back labial/incisally and layered with porcelain. One of the biggest advantages
is that very thin “no prep” veneers can be done with this technique using only opalescent
or high translucent material. This technique allows for high aesthetics with the added
advantage that alterations can be done at any time.