Why you might need a root canal
Inside each tooth is soft tissue called the pulp. When deep decay, a crack or an injury lets bacteria reach it, the pulp can become inflamed or infected. That often causes throbbing pain, swelling, or sensitivity that lingers.
A root canal removes the infected tissue, cleans the inside of the tooth, and seals it. Most teeth then get a crown to protect them.
Does a root canal hurt?
Most patients tell us it feels much like getting a filling. The tooth is fully numbed first, and the treatment relieves the pain the infection was causing.
Signs to watch for
- Severe or throbbing toothache
- Pain that lasts after hot or cold
- Swelling or a pimple-like bump on the gum
- A tooth that's turning darker
Swelling in your face or trouble breathing or swallowing? Go to the nearest emergency room or call 911.