@FrustratedPharm A root canal by definition removes the nerve from the tooth. Most of the time OTC pain relief ( ibuprofen and or Tylenol ) should be sufficient.
Presenting @Aetna's "healthcare" strategy: 2015 MRI revealed stress fracture in foot after inconclusove x-ray and ultasound. Boot for 8 weeks seemed to resolve symptoms. Same pain 5 years later. @Aetna denies preauth for MRI, explicitly demanding treatment *before* diagnosis.