My tooth #22 has had a root canal many years ago. It began to irritate me . The dentist said maybe a reaction to the metal on the crown. We replaced the crown. While doing this the dentist said there could be a very slight crack in the root canal. He said we would need to watch it and see. The x ray also showed there might be an infection brewing... I am having sinus drainage and ear pressure.. But no pain in tooth or around whatsover...I saw an endodontist for a 2nd opinion. He said there is a perforation by the post. The endodontist is going to drill a hole in the crown and look at it with a special microscpoe. He said he will tell me if there is a chance he can repair it.. If not , the tooth will need to be extracted..
Question 1: How succesful is repairing a perforated root canal?
Question 2: Can my runny nose and ear pressure be a result of this?