I got an old root canal retreated this past tues due to abscess. dr put meds and temp crown on it til appt in 2 wks. abscess seems worse. normal?

Endo retreatment: Whenever a n old root canal is retreated, it is normal for the tooth to be more sensitive than before. The removal of the root canal filling is more laborious that taking out the pulp tissues. It is always possible to take the files outside of the root into the surrounding bone and cause some post op pain. Continue the medication as prescribed and check back with the dentist if symptoms worsen.

Possibly: Retreatment involves removal of previous root canal materials from the roots and often times involves using solvents. These are irritating to the periapical areas where the abscess is located, sometimes increasing your pain and swelling. If swelling is profound, sometimes incision and drainage is necessary. Antibiotics take 48 hrs. To help. If things don't improve, see tour endodontist.