Because tooth already does not ache, fill the tooth ache one day, the next morning wake up is not painful, is do root canal cure? Is it anti-inflammatory now?
If yes, it is possible that the anti-inflammatories are stimulated to the root of the tooth, generally open the pulp cavity is not so painful, need to go to your dentist to refill the medicine and so on.
It's best to go to your dental hospital and ask your dentist.