Hi

I had a crown placed on a lower first molar. After using for 8 months,
I felt the   opposite upper tooth were painful. I went to the dentist.
He said the crown may too high and it was common. so he shave some on
the outer edge.

But after that, I felt the pain shifted to the upper premolar. And I
put a small piece of paper on the molar and bite down. The paper can
be easily pull out unless I fold the piece of paper twice and make it
4-layer thick. It seems the molar did not contact with upper tooth
closely. I think it is because the dentist shave the tooth.

Is this OK if there is no touch between the molar and opposite tooth?
For the  premolar pain, should I wait for a period of time, like 1 or
2 month to let the teeth adopt to new positions?

I definitely don't want to go too much work on my teeth since there
are already many fillings. I already regret very much that I have the
crown filed. It may only a temporary problem. And the fixing generated
a new problem on my good teeth.

Can anyone please give me a suggest whether I need to have the crown
replaced? Any how much tooth loss will cause for the crown
replacement?

Thanks