Signs you might need a root canal
- Severe or throbbing toothache, especially when chewing
- Lingering sensitivity to hot or cold
- Swelling or tenderness in the gums near a tooth
- A tooth that has darkened in color
- A pimple-like bump on the gums
How it works
Inside every tooth is soft tissue called the pulp. When decay or a crack lets bacteria reach it, the pulp becomes inflamed or infected. During a root canal, Dr. Tran gently removes the infected tissue, cleans and disinfects the inside of the tooth, and seals it. Most teeth then get a crown for strength.
In pain right now? Our $50 Emergency Exam includes an exam and x-rays so we can find the cause fast.
Common questions
Does a root canal hurt?
The procedure is done with local anesthesia, so most patients find it about as comfortable as a filling. It relieves the pain caused by the infection.
Do I need a crown after a root canal?
Back teeth usually need a crown afterward to protect them from cracking. Dr. Tran will let you know what your tooth needs.
What happens if I don’t get a root canal?
An infected tooth will not heal on its own. The infection can spread, cause an abscess, and eventually the tooth may need to be removed.
Last updated November 13, 2026 · AEI Dental, Katy, TX