Sound like: The root canal may need to be retreated or that you have another tooth acting up. I would see an endodontist or my dentist for an evaluation.
Answered 4/4/2016
4.4k views
Re-infection: Sounds like the tooth has reinfected. Best option is to get back to the dentist/root canal specialist who did the root canal and give you options. Re-treatment or a minor surgery in the gum tissue above the tooth may be indicated. I would not rule out a potential fracture of the root, which will present you with other decisions to make. If in doubt, get more than one opinion.
Answered 2/17/2014
4.4k views
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