HEALTH CONDITION

Dental abscess

A dental abscess is a build-up of pus in the teeth or gums caused by an infection. It needs urgent treatment by a dentist. A dental abscess will not go away on its own.

Symptoms of a dental abscess

Symptoms of a dental abscess include: intense toothache or pain in your gums redness inside the mouth, or outside the mouth on the face or jaw sensitivity to hot or cold food and drink in the affected area a bad taste in your mouth difficulty opening your mouth and chewing food a swollen face or jaw swollen glands on each side of your neck a high temperature

How to ease the pain caused by a dental abscess

There are some things you can do to help while you wait for treatment if you have pain from a dental abscess. Do take painkillers, such as ibuprofen or paracetamol (children under 16 should not take aspirin) eat soft foods like soup, scrambled eggs, mashed potatoes and yoghurt use a soft toothbrush to clean your teeth avoid having food or drink that is very hot or cold Don't do not take more than the recommended dose of any painkiller – taking a higher dose will not make them work better, but it can be very dangerous

Treatment for a dental abscess

Dental abscesses are usually treated by a dentist. The dentist will drain away the pus. If a problem with your tooth has caused the abscess, you may need root canal treatment or the tooth may be removed. You'll be given a local anaesthetic so you do not feel any pain. You may be offered painkillers to take for a few days after treatment and may also be given antibiotics.

Causes of a dental abscess

Dental abscesses usually happen when pus builds up beneath your teeth or gums when you have an infection in your mouth. You may get a dental abscess if: you have a tooth that has not grown out of your gums properly (an impacted tooth) you have tooth decay or gum disease you have injured your teeth, gums or mouth you're having radiotherapy or chemotherapy

How to prevent dental abscesses

There are some things you can do to help prevent dental abscesses. Do brush your teeth with fluoride toothpaste at least twice a day – spit after brushing, do not rinse clean between your teeth every day using floss or interdental brushes replace your toothbrush every 2 to 3 months have regular dental check-ups so problems can be spotted early Don't do not use mouthwash straight after brushing your teeth do not smoke

Source: NHS, last reviewed 18 March 2026. Contains public sector information licensed under the Open Government Licence v3.0.

This page is general information and is not medical advice. It does not replace a registered doctor, and it is not a prescription or a recommendation to use any medicine or test. Prices are listed prices and may change. Always follow the advice of your doctor or pharmacist.