I had a root canal about 8 years ago and recently the same tooth has started throbbing. I did go to my dentist who  took an ex ray and saw some dark areas at the root. He put me on an antibiotic and provided pain meds until I can get in to see the endodontist next week.  I am taking 3 Advil every 3 hours plus the pain pills and the throbbing is still killing me. Any suggestions and what can cause this since I already had a root canal on this took? Thank you
Hello, Thanks for consulting Chat Doctor, Read your query, as you have pain in act treated tooth and your x-ray reveals radiolucent area at apex of root means infection is present for this I will suggest you to do warm saline gargle two - three times a day, for pain you can take dispensable tablets like petrol DT or paracetamol tablet in water for relief. Consult oral surgeon and go for re act if pain persists. Hope this will help you. Wishing you good health.