Can a root canal still hurt
A root-filled tooth can hurt from healing tissues, a high bite, persistent infection, a missed canal, a crack, or another tooth.
The short answer
A root-filled tooth can hurt from healing tissues, a high bite, persistent infection, a missed canal, a crack, or another tooth. A dentist uses the examination findings to identify the cause.

What is the direct answer?
What does this question mean?
The clinical subject is root canal pain. Possible causes include periodontal ligament, bite, canal system, restoration. The appearance or symptom alone does not establish a diagnosis.
What can you do next?
Do not chew heavily on it. Keep the area clean, record changes, and arrange the appropriate dental examination. Treatment is selected after the cause and anatomy are assessed.
When should you seek dental care?
Seek prompt care for worsening pain, swelling, fever, pus, or a persistent change. Emergency assessment is needed for difficulty breathing or swallowing.
What should you ask the dentist?
Ask about bite, restoration, imaging, crack, and retreatment. Ask which examination, imaging, laboratory test, or treatment is appropriate and what follow-up is needed.
Frequently asked questions
Can this be diagnosed at home?
No. Different dental causes can look or feel similar, so examination is needed.
What determines treatment?
The findings from the history, clinical examination, and any indicated tests determine treatment.
