Veneer Color Change Before Procedure?

It's beneficial to everyone involved that BEFORE the veneers are bonded to the tooth structure permanently that you go through a try-in phase (sometimes even with try-in gel to replicate what the underlying cement will do). 

Veneers look very different just examining them on a model vs. visualizing them in the mouth with a try-in gel.  This because the veneer gets a lot of it's color characteristic from the color of the underlying tooth structure in some cases. 

It is obviously best to have the final color picked at the time of impression so the lab makes them this way. Once the lab makes them you can only modify the color slighly by using darker or whiter cements. This can be tried without bonding to see if you like it. The problem is that if you still want them brighter, they have to be sent back to the lab to modify or re-make. Your dentist will also have to make new temporary veneers. The lab may charge an additional fee for re-making them(specially if the lab made the correct color that was originally selected ). So you may be charged an additional fee to make up for the extra lab cost and time spent.

However, if the lab delivered a color that is not as bright as originally selected, then there should not be an extra charge.

The temporary veneers should be a good guide to deciding on a final color. Many times we have patients who may be unsure of the color wear the temporary veneers for several days and come back in to do a final shade selection prior to the lab starting on them.

Hope this helps

Dr. T