Tooth pain after root canal

Had a crown placed on tooth 30. 3 months later had pain between 30 and 31 and more lateral on tooth 30. Pain is above the seat of the crown on the back of tooth 30 especially when pulling the floss out. The gums are not sore . Had root canal done and still have the same pain. Endodontist had me use steroids,special mouthwash and seems to have given up. Dentist says to try baking soda,peroxide salt mix. CT is negative and they both concur that the root canal was successful. The same pain persists. What should i do? I want save the tooth if at all possible. Help!

* Comment notes.

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
Please answer the question so we know you're a human.