My in-laws have had this problem. They went to a family friend who was starting a new practice... father-in-law had to get his work redone TWICE due to bad application, mother-in-law had a crown done that looks out of place (too white, IIRC).
Empress 2 is no longer being made. It was replaced by Eris which is a fine posterior crown. Procera is good but they fit a little loose on the die and I have never liked that. Otherwise, in my experience, Eris and Procera are about equal.
All true. I'm often asked (by dentists) which materials / systems I prefer. (And, there are far more than the two mentioned.) My answer: All the above. I use them all. I don't believe any is categorically superior. It's like asking Tiger Woods which is better? A 5-iron? Or a 7-iron? The answer is it depends. Ultimately a master dentist and a master lab technician can use almost ANY system and make it look great and function well. Tiger Woods could probably play 18 holes with just a 5-iron and beat anyone else with a full bag. Which is best? The one that works well in the hands of the dentist and lab technician for that given situation. Mike
I wanted to add that in my practice, the fee is the same regardless of which material is used. I believe the dentist should be the one choosing which material is best rather than the patient using limited information. It's much more about the dentist than the material. Mike