Can a root canal go bad after 20 years
A root-canal-treated tooth can develop a new problem years later from leakage, missed anatomy, fracture, decay, or failure of its restoration.
The short answer
Canals can be reinfected if a filling or crown leaks, and complex anatomy can leave an untreated space. A vertical root fracture is another possible cause of recurrent symptoms.
What is the direct answer?
What does this question mean?
A dentist examines the tooth and gum, tests nearby teeth, checks the restoration, and uses radiographs or a three-dimensional scan when indicated.
What can you do next?
Renewed pain, swelling, a draining gum spot, a loose crown, or pain on chewing warrants prompt care; facial swelling with fever or airway symptoms is urgent.
When should you seek dental care?
Is this reinfection, leakage, fracture, decay, or a different tooth, and what does imaging show?
Frequently asked questions
What changes the advice?
A dentist examines the tooth and gum, tests nearby teeth, checks the restoration, and uses radiographs or a three-dimensional scan when indicated.
What should I do now?
Renewed pain, swelling, a draining gum spot, a loose crown, or pain on chewing warrants prompt care; facial swelling with fever or airway symptoms is urgent.