I have had a toothache for a month, i went to the dentist and it was determined i needed a rootcanal.the root canal was done on number 19, however the pain i am experiencing is in my front lower gums.xrays and exam show nothing, what else could it be?

Referred Pain: You may be experiencing referred pain from # 19. Could be an infection, could be inflammation. Your treating dentist needs to re-evaluate the problematic tooth.

Pain: 3 possibilities, specialist consults recommended: 1) Referred pain from failed root canal. See an Endodontist. 2) Gum/bone disease. See a Periodontist. 3) Teeth shifting. See an Orthodontist.