Is the zirconia porcelain crown heavyweights?

Hello, We need a little more information. What are your symptoms? Typically it is very difficult to remove cemented crowns without having to cut them off, unless a weak cement is used to cement them. Dr. Michael Mazaheri

It is possible for a crown to be tight. This is caused by the lab made crown being slightly wider than the actual space between the teeth next to the crown space. The tightness should be tested by the Dr on crown insertion.  The tightness can be relieved by the Dr...

It is not a good idea to reshape the existing crowns as it is not going to look correct.  You will want to consider doing the front six teeth to get proper symmetry and harmony.

Hi;Very often sensitivity to heat means a dead or dying nerve that requires a root canal.  Please have a root canal specialist check the tooth.Best,Dr. Maddahi

Hi:Due to the temporary crown material and fit, it is very diffcult to be able to chew normally on it.  It's best not to try to chew on the temporary crown until you final crown is cemented.Best,Dr. Maddahi

It appears from the limited info you've given that the depth of the decay in one or both of the treated teeth might have been extensive enough to damage the nerve.  That can often happen. Without and x-ray, its impossible to diagnose. Return to your dentist and bring...