This patient wanted me to replace 1 crown. Can you guess which one? It’s the one that looks really bright. Old crowns are made of porcelain fused to metal. In those days, the porcelain was really flat, and bright white, since this was needed to opaque the metal that the crown is made of. These old crowns are also known for showing the metal at the margin, hence the dark gumline. Instead of replacing one crown, since it’s hard to match one exactly to the natural teeth, I offered to do 5, and here is the result.
These crowns are emax. They are translucent, and made from lithium disilicate. If the margin shows, it’s okay. The margin is translucent and is showing the tooth underneath. So this patient was extremely happy.