The most common signs of a tooth infection are throbbing pain, swelling in the jaw or cheek, sensitivity to heat and cold, fever, a bad taste in the mouth, and a pimple-like bump on the gum. If you have swelling, fever, or difficulty swallowing, seek care immediately — these signs indicate the infection may be spreading.
Signs of a Tooth Infection
Throbbing, persistent pain
Unlike sensitivity that comes and goes, infection pain is often constant and throbbing — and may radiate to the jaw, ear, or neck.
Sensitivity to heat and cold
Lingering sensitivity to hot or cold that does not resolve within a few seconds can indicate the nerve is involved.
Swelling in the jaw or cheek
Visible swelling on one side of the face is a serious sign that the infection is spreading into surrounding tissue.
Fever
A fever alongside tooth pain signals that your body is fighting an infection — and that it may be spreading beyond the tooth.
Pimple-like bump on the gum
A small, pimple-like bump (called a dental fistula or sinus tract) near the tooth is a sign of a draining abscess.
Bad taste or smell
A persistent foul taste or odor in the mouth can indicate pus draining from an abscess.
Pain when biting or chewing
Pressure sensitivity — pain when you bite down — is common with infected teeth.
Go to the ER If You Have These Signs
Swelling spreading toward your neck or throat
Difficulty swallowing or breathing
High fever (above 101°F) with tooth pain
Swelling that is rapidly getting worse
Inability to open your mouth
Frequently Asked Questions
Think You Have a Tooth Infection?
Don't wait — tooth infections can spread quickly. Call Merchants Walk Dental in Marietta for a same-day evaluation and prompt relief.
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