The short explanation
Pain and swelling around a wisdom tooth, with difficulty opening the mouth fully, is often caused by pericoronitis, an infection of the gum flap over a partly erupted wisdom tooth. Food and germs get trapped under the flap, causing inflammation, swelling, pain and sometimes a bad taste. A dentist can clean the area, check whether the tooth is impacted, and decide whether treatment is needed. If wisdom teeth keep causing infections, removal may be suggested. In the meantime, rinsing with warm salt water and keeping the area clean may help, but please see a dentist soon.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Swelling spreading to the face or neck, fever, or difficulty swallowing or breathing need urgent care.
- An X-ray helps show the position of the wisdom tooth.
- Government dental colleges offer wisdom tooth treatment at lower cost.
- Avoid self-treating with leftover antibiotics.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether you have an infection or whether your tooth needs removal. A dentist needs to examine you.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is this an infection around my wisdom tooth?
- Does the tooth need to be removed?
- Do I need an X-ray?
- How can I keep the area clean?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to emergency if swelling spreads to your neck, you have difficulty breathing or swallowing, or high fever.
Get help the same day
- Get same-day dental care if swelling is increasing or you cannot open your mouth.
Book an appointment soon
- See a dentist within a few days for wisdom tooth pain.
Sources
The evidence this explanation is built on.
- Oral health World Health Organization
- Gum disease NHS
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
Did this answer your question?
Whatever you choose is filed against this version of the answer, never against you, and it is never shown as a count.
“Explain more simply” asks you which part was hard to follow, so the author knows what to rewrite. “My question is different” opens a private follow-up with this answer attached.
Saving, following up and reporting are all private. Nothing you do on this page is visible to other readers or to the doctor who wrote it, unless you ask a question.