01
Common causes
- Decay that has reached the nerve
- A cracked tooth (often pain when biting or releasing)
- An abscess or infection
- A lost or leaking filling
- Gum recession exposing the root
- Sinus pressure (upper back teeth)
- Grinding or clenching
Tooth pain guide
What can cause sudden tooth pain?
1 min read · Patient guide
A toothache that appears out of nowhere usually has a clear cause—and most are very treatable. Here are the common culprits and what to do.
Eagle River practice • serving patients since 2007
Patient guidance from the Legacy team
Patient resource
Use this guide to prepare better questions—then call us with them.
02
What to notice
When it started, what triggers it (hot, cold, sweets, biting), whether it lingers, and whether there’s swelling. These details help us diagnose faster.
03
What to do
Call Legacy Dental Arts in Eagle River to describe your pain and confirm availability. Pain with swelling or fever needs urgent dental attention. Trouble breathing or swallowing, serious injury, or uncontrolled bleeding requires emergency medical care: call 911.
General patient education from Legacy Dental Arts · Published · Updated · Not a diagnosis or substitute for individual dental advice.
Helpful questions
Clear answers before you reach out.
Why does it hurt when I bite down?+
Pain on biting, or on releasing the bite, often points to a cracked tooth. Cracks tend to spread, so it’s worth having it looked at.
Can sinus pressure cause tooth pain?+
Yes. Sinus pressure commonly shows up as an ache in the upper back teeth.
When does a toothache need same-day care?+
Pain with swelling or fever, or pain that keeps you up at night, should be seen the same day.
What helps until my appointment?+
Avoid chewing on the affected side and do not place aspirin on the tooth or gums. Ask a pharmacist or clinician about pain relief appropriate for your health and medications while arranging dental care.
Don’t wait it out
Let us find the cause.
Tell us when it started, what sets it off, and whether there is swelling. Those details help us diagnose faster.