General & Restorative2 February 20253 min read

Signs of a Tooth Infection

Catch infections early. Here's what to watch for.

Dr. Fatima Hassan

General Dentist & Endodontist

Early signs

Throbbing toothache
Sensitivity to hot
Pain on biting
Tooth feels 'different'

Mid signs

Constant pain
Pimple-like bump on gum
Bad taste
Lymph nodes tender

Advanced signs

Visible facial swelling
Fever
Fatigue
Swelling spreading

What to do

Early: see dentist within 48 hours
Advanced: ER immediately

Treatment

Root canal + possible antibiotic
Extraction in some cases
Incision and drainage

Practical decision guide

General dental decisions should preserve healthy tooth structure whenever possible. A good plan moves from diagnosis to the least-invasive durable treatment, then to prevention so the same problem does not repeat.

Check this first

X-rays, pulp vitality, crack lines, gum pocketing, bite contacts, and how much natural tooth remains.
Whether the problem is active disease, old restoration failure, trauma, wear, or a cosmetic concern.
Whether a filling, onlay, crown, root canal, extraction, or monitoring is the right next step.

When to book sooner

Pain wakes you at night, lingers after hot or cold, hurts on biting, or comes with swelling.
A crown or filling falls out, a tooth cracks, or a sharp edge is cutting the tongue or cheek.
You notice pus, fever, spreading swelling, or difficulty opening, swallowing, or breathing.

Topic-specific notes

For pain or infection, home care can reduce discomfort but cannot remove the cause. Swelling, fever, pus, spreading redness, trauma, or difficulty swallowing should be treated as urgent.

Questions to ask at the appointment

What is the diagnosis, and what evidence supports it on the x-ray or clinical exam?
What is the smallest treatment that solves the problem predictably?
What failure signs should I watch for after treatment?

Dubai patient note

If insurance is involved, ask whether pre-approval is required, what codes will be submitted, and what alternatives are clinically acceptable if coverage is limited.