Hi, I had a root canal completed but after 5 weeks I was experiencing a small pain in the exterior part of it , I reported to my dentist, She did did some kind abrasions or cuts but after 3 more weeks, I am still with the same sensitivity. I am going with the dentist again, but I would like to know that if the root has been erradicated, what possible it's happening?, is it possible that the root hasn't been completely extracted?, or what else? Any light in my issue will be completely appreciated, thanks and have a good day!