How urgent is it? See a dentist soon
See a dentist if the area is painful or swollen. Seek urgent help (dentist or NHS 111) if you have spreading swelling, a high temperature or feel unwell; go to A&E if swelling affects your breathing or swallowing.
What it is
Wisdom teeth are the last teeth to come through, usually between the late teens and mid-twenties, although they can cause problems at any age. Some people have four, some fewer and some none at all.
Problems usually happen when there is not enough room for a wisdom tooth to come through fully. It may be stuck against the tooth in front (impacted) or partly covered by gum, trapping food and bacteria. This can lead to a painful gum infection called pericoronitis, decay, gum disease, a cyst or an abscess.
Wisdom teeth that are healthy, fully through and easy to clean usually do not need to come out, and trouble-free teeth are normally left and monitored at check-ups. If a wisdom tooth keeps causing problems, it can be removed on the NHS when clinically necessary.
Signs and causes
Common signs
- Sore, swollen or tender gum at the back of the mouth
- Difficulty opening your mouth fully
- Pain when chewing
- A bad taste or bad breath
- Swelling of the face or jaw
Usual causes
- Not enough space in the jaw for the tooth to come through
- A tooth growing at an angle and becoming impacted
- Food and plaque trapped under gum partly covering the tooth
- Decay in a partly erupted tooth or the tooth in front
Ways to fix it
The options a dentist may discuss with you, and when each one tends to be used. Which one suits you depends on an examination.
What you can do now
- Clean around the area carefully with a small-headed or single-tufted toothbrush
- Rinse with warm salt water
- Take paracetamol or ibuprofen for pain, following the pack instructions
- Eat soft foods while the area is sore
Preventing it
- Keep the back of the mouth as clean as possible, especially around a partly erupted tooth
- Attend check-ups so your dentist can monitor wisdom teeth with X-rays where needed
Common questions
Do all wisdom teeth need to come out?
No. Healthy wisdom teeth that are fully through and easy to clean usually do not need to be removed. They are normally left and monitored if they are not causing problems.
How much does wisdom tooth removal cost on the NHS?
When done by an NHS dentist in England it is a Band 2 treatment (£76.60 from April 2026) unless you are exempt. The NHS says there is no charge if you are referred to a hospital for NHS treatment.
What is pericoronitis?
It is an infection of the gum around a wisdom tooth that is only partly through, usually because food and plaque get trapped under the gum.
Products that may help at home
These support good daily care; they don’t replace treatment from a dentist. Some links may be affiliate links.
TePe Compact Tuft
A single-tuft brush for precision cleaning where a normal brush struggles – around brackets, along the gumline, crowded teeth…
Aquafresh Little Teeth toothpaste (3–5 years)
A children's toothpaste for ages 3 to 5. The NHS recommends a pea-sized amount at this age, with 1,000 to 1,500ppm fluoride –…
Aquafresh Milk Teeth toothpaste (0–2 years)
A toothpaste for babies and toddlers with at least one tooth. The NHS says under-3s should use a smear of toothpaste with at…
Colgate Total Active Prevention Original toothpaste
Colgate's multi-purpose everyday toothpaste, positioned for plaque, gum health and cavity protection. A good fit for people who…
Sources we used
- NHS: Wisdom tooth removal
- Oral Health Foundation: Wisdom teeth
- NHS: Dental treatments
- NHS: How much NHS dental treatment costs
- NHS dental charges from 1 April 2026 (poster, PDF)
- NHS: Toothache
Checked September 2026. Guidance changes, so always follow the advice of your own dental team. About our sources.