Tooth hurts after root canal.
Doctor Answers 1
Tooth must not hurt after root canal
When root canal therapy is done correctly the dentist (preferably a specialized one called endodontist) should have eliminated any infection there might have been, and removed the damaged pulp. Also cleaned, shaped, filled and sealed the tooth. If you felt the pain only after the crown was done I would consider a high contact point on the crown, but since you felt it right after the root canal treatment, I suspect one of the steps mentioned above was not done right. I suggest you have a x-ray taken to see if there is still infection and go to another endodontist for a second opinion, because the pain is probably not going away until it is done right.