Dr. Cyril Tahtadjian
Do visit your dentist. He will have to take an X-ray. If the tooth was fine for 3 months and now it just started being sore again, you may have fractured it. Did you have a crown placed on the tooth? If the dentist is unable to figure out why, you may need a CBCT scan or a referral to an endodontist.
Hope this helps.
A failing root canal or a fractured root.
Some of the causes of this situation are 1) incomplete sealing of the canal 2) cracked tooth -- there might be a crack in the tooth somewhere; sometimes they are hard to detect 3) wrong tooth -- you may have "referred pain " -- pain in one tooth is actually from another tooth 4) crown (or temporary crown) is too high -- you are pounding on the tooth (dentist can lower the crown height). See your dentist again.
Thank you for the question,
Dr. Arthur J. DeAngelo, B.S., DDS
to a specialist (endodontist) to evaluate the tooth as well.
Another scenario, if you needed a crown and didn’t get it done after the root canal or at least a permanent filling in order to seal the tooth, then bacteria can get in and cause an infection, which will result in pain.
I would have the tooth retreated by an endodontist, a root canal specialist.