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Is My Tooth Infected? Clear Signs You Shouldn’t Ignore

By Alpine Dental NJ · July 16, 2025 · 2 min read

How do I know if my tooth is infected? Get fast facts and signs of tooth infection—pain, swelling, fever—at Alpine Dental in New Jersey.

Is My Tooth Infected? Clear Signs You Shouldn’t Ignore

A tooth infection means bacteria are inside your tooth or gums, often causing pain, swelling, and sometimes fever. How do I know if my tooth is infected? Look for these common, reliable signs.

How Do I Know If My Tooth Is Infected?

  • Severe, throbbing toothache: Pain that lingers and may spread to your jaw, ear, or neck.

  • Sensitivity: Increased pain when eating hot, cold, or sweet foods; pain when biting or chewing.

  • Swelling: Gums, face, or jaw look puffy or feel tender near the problem tooth.

  • Red or swollen gums: Gums may also have a pimple-like bump or ooze pus.

  • Fever: Sometimes paired with general discomfort or swollen lymph nodes in the neck.

  • Bad breath or foul taste: Odor and bad taste that brushing doesn’t fix.

At Alpine Dental, most patients asking “How do I know if my tooth is infected?” mention at least two symptoms above. National data shows over 90% of dental abscesses involve a continual, throbbing pain and visible swelling.


Don’t let tooth infection symptoms escalate. Book a “Smile Rescue” visit at Alpine Dental—bring your favorite cozy scarf, and our expert team will quickly pinpoint the cause and restore your comfort!


Sources:

  1. https://www.mayoclinic.org/diseases-conditions/tooth-abscess/symptoms-causes/syc-20350901
  2. https://www.mountsinai.org/health-library/diseases-conditions/tooth-abscess
  3. https://www.nhs.uk/conditions/dental-abscess/
  4. https://www.healthline.com/health/symptoms-of-tooth-infection-spreading-to-body
  5. https://www.uhc.com/news-articles/healthy-living/signs-and-treatment-of-an-abscessed-tooth
  6. https://www.colgate.com/en-ca/oral-health/tooth-removal/serious-infections
  7. https://www.medicalnewstoday.com/articles/symptoms-of-tooth-infection-spreading-to-the-body
  8. https://yourdentalhealthresource.com/is-your-tooth-infected-here-are-the-signs/
  9. https://www.colgate.com/en-za/oral-health/tooth-removal/serious-infections
  10. https://www.topdoctors.co.uk/medical-articles/how-do-i-know-if-i-have-an-infected-tooth/