If I ever need a crown, I will request a porcelain one..not porcelain over metal. My dentist fabricates this type right in his office and you do not need a temporary crown.
Gold crowns are great, but too expensive and at my age, they do not have to last the next 30 years as I probably will not be here.
I have only one crown that is on a back molar. it has been in place for at least 30 years. It is 100% stainless steel. I am thankful that it was not gold or porcelain.
My old dentist placed a filling on the tooth, but did not do it correctly. There was an open space..a small tunnel that was in between the teeth. This caused a lot of damage to my tooth and it was repaired and the SS crown was placed.
A few months later, I developed severe pain in that tooth. I needed a root canal on a tooth that had a crown on it.
The crown was drilled through on top and the root canal was completed. A new amalgam filling was placed on the tooth with the crown still intact. So, now I have a crown with a filling on top. It is the last tooth in the back and not visible.
If my crown was not SS, it would have been ruined. That SS crown cost me over $500 all those years ago. I was still making payments on it when it was drilled into. I think I got my money's worth.