32yof, 51; hx of root canal/crown placement of right front tooth in 1999; now have palpable raised area between right nostril down to gums- beneath gums- not externally visible; tender to pressure/percussion; no fevers; throbbing pain/pain with pressure to tooth; abscess? cyst? tooth or sinus?
Thanks for using Chat Doctor. Read your query. Re-infection of the root canal treated tooth can be the cause for the swelling, tenderness and pain in the region leading to the abscess formation. I would advise you to visit your endodontist and get a radiograph done to see the status of the root canal treated tooth. If needed, carry on the re-treatment. If not periapical surgery can also help you. For the pain take ibuprofen tab (if you are not allergic to any medicine). Antibiotics may be required like amoxicillin 500 mg and metro lag 200 mg on prescription by your dentist. Hope this was useful. Thanks and regards.