[1066AD]

I had one break the other week, it looked like porcelain on the outside but the inside was lined with some metallic looking stuff, never thought anything of it. I can’t tolerate the metal temporary crowns at all, instant pain.

I wonder if there’s any dentists here who could comment ?

[RepublitarianRoger2]

I think there are both porcelain crowns (which may also have some resin or acrylic parts), and then there are metal crowns with porcelain bonded to them on the outside. Sounds like you got the latter.

[tongass kid]

The metal could be non-precious or contain gold and other expensive metals. You need to ask the dentist that place the crown. The metal thimble shape is usually fabricated first and the porcelain is baked to the metal.