Are you supposed to see the metal on a metal occlusal porcelain crown?

[paula123]

With my other crowns, you cannot see the metal . Just wondered if the dentist had shaped the new crown too much, and gone through to the metal on the bite surface. Or are they made like that? I would be very grateful for some advice....

 

[MattKW]

Happens sometimes if the lab makes the metal too thick or porcelain too thin; sometimes the dentist underprepares the tooth; sometimes the bite/occlusion is unstable and hard to get right. Even sometimes I will deliberately ask for a metal biting surface.
However, the metal is the strength of the crown, so a bit of metal showing through is usually insignificant.

 

[paula123]

Happens sometimes if the lab makes the metal too thick or porcelain too thin; sometimes the dentist underprepares the tooth; sometimes the bite/occlusion is unstable and hard to get right. Even sometimes I will deliberately ask for a metal biting surface.
However, the metal is the strength of the crown, so a bit of metal showing through is usually insignificant.

Thank you for your help!