I got a crown in my far back bottom tooth 8 days ago.  The crown was
put in because I had a big old metal filling in this tooth and just
decided it was time.  My dentist did not encourage (nor discourage)
this procedure - initially he planned to replace just the filling, but
when he noticed a crack he suggested a crown.  I agreed, knowing I
didn't want to just have to come back and get a crown later - I figured
I was already numb.

Anyway, once the novacaine wore off, my tooth was sore that evening and
for the remainder of the week.  It seemed to only hurt when I put
pressure on it (eating or pressing down with my finger).  I went back
to the dentist after 1 week and he said it was likely set too high and
filed it down a bit while checking my bite.  That day I came home to
much more severe pain.  Advil eliminated the pain entirely, but I can't
help but wonder if this is a sign of something more severe.  My doc
said the chances of it being more serious were very small, but he said
to call in a few days if it's not better.

I'm still waiting to see if the pain subsides but last night I woke up
with fairly severe pain in my entire jaw, no longer just this tooth.
Again, Advil eliminated the pain completely.  Now today I haven't had
any Advil in about 8 hours, and I feel a very mild ache in this part of
my mouth.  I certainly can't chew on this side though.

Do I get a 2nd opinion or continue to wait, assuming the nerve may just
be inflamed?  This is my 4th crown over time, but I never had any
lingering pain with the others (same dentist for all).