Pain after old crown removed

Just last week, I had an old crown removed due to age related deterioration.  This is tooth #14.  While removing the old crown, he "drilled" to cut it away then attempted to remove with pliers.  It wouldn't budge despite some twisting and pulling.  He used the drill again to loosen the it further and on the next attempt he was successful in removing the old crown.  As I was quite numb I felt no pain.  
At the same time #12 was prepped for a crown as it had a center filling and hairline crack on either side.  There is nothing like video imaging to see a hairline crack in your own teeth!!

I left the office with the two temps after they checked its fit with my two day old orthodontic retainer.  When the novacaine wore off I was hurting.  After a day of pain, I switched back to my Invisilign braces on the top which were a better but still uncomfortable.  Five days after the crown procedure I was able to have the Ortho readjust my retainer.  
Tooth #14 still hurts with temperature and pressure!  

I had NO pain in that tooth before the crown removal.  
My questions are:
Did the crown removal traumatize my nerves enough to need a root canal?   Since it has been just a week, if I continue to avoid contact with that tooth will it likely become less sensitive?  Could the gentle pressure of the ortho appliances have had an effect?   If the crown removal started the problem should my dentist cover the root canal cost if it is necessary?

Thank you so much!  This site is great!

[Jerome Bogin, D.D.S.]

I will try to answer your questions in order. The removal of the crown does not cause the need for RCT. If the tooth is sensitive to cold that is an indication that the tooth is vital.It could be that the temp is leaking which would cause the discomfort. Even with a temp you should be able to chew. It is possible that the ortho appliance is causing some of the problem but I can not say for sure. The answer to the last question is no.