A root canal treats infection or inflammation inside a tooth's nerve — and catching the warning signs early usually means a simpler, more comfortable treatment. Here's what tends to show up before that conversation happens.
The most common warning signs
- Sharp or throbbing pain that comes and goes, or won't stop
- Sensitivity to hot or cold that lingers well after the stimulus is gone
- Pain when biting down or applying pressure
- Swelling or tenderness in the gums near a specific tooth
- A tooth that's darkened or discolored compared to its neighbors
- A small, recurring pimple-like bump on the gum
Why the pain sometimes disappears (and why that's not good news)
One confusing part of nerve infections is that pain can suddenly stop — not because the problem resolved, but because the nerve tissue has died. The infection is often still present and can spread if left untreated, so a pain-free tooth that was recently hurting is still worth getting checked.
What happens if you wait
Untreated infections can spread to the surrounding bone and, in some cases, lead to a more serious abscess. The earlier it's addressed, the more likely the natural tooth can be saved rather than extracted.
If any of this sounds familiar, don't wait it out. A quick exam and some imaging is usually all it takes to know exactly what's going on.