Short answer
A root canal, also called endodontic treatment, removes infected or inflamed pulp from inside the tooth to save it. It is done under anesthesia and usually hurts about the same as a filling. A session takes about 60 to 90 minutes, although some cases need more than one visit, and the tooth is then protected with a crown.
Signs you might need one
- Severe pain or pain that comes on by itself.
- Lingering sensitivity to cold or heat.
- A swollen gum or a small bump near the tooth.
- A tooth that has darkened after a blow.
These signs need to be checked. Only an exam and an X-ray can confirm the diagnosis.
How it works
- Exam and digital X-ray.
- Anesthesia and isolation of the tooth.
- Cleaning and disinfecting the canals.
- Sealing the canals.
- Final crown to protect the tooth.
Frequently asked questions
Does a root canal hurt?
With modern anesthesia, it usually hurts about the same as a filling. You may feel pressure during treatment and mild sensitivity for a few days afterward.
Can I bite down on that tooth?
Wait until you have your final crown. Until then, the tooth is more fragile.
Sources
For information only. This is general information and does not replace an evaluation. The right treatment depends on your case and is determined by your dentist after examining you. Updated: 2026-11-01.
