Dental Health

Gum Abscess: Symptoms, Treatment and When It Is an Emergency

A gum abscess is a pocket of pus caused by a bacterial infection in the gum. It is not a bump you can wait out. It needs a dentist, and in some cases it needs an emergency room.

This guide covers what a gum abscess feels like, what causes it, what treatment involves, and which red flags mean emergency care.

The short version: the NHS says a dental abscess will not go away on its own and needs urgent treatment by a dentist. Everything else in this article is detail on that one point.

What a Gum Abscess Is

An abscess is a collection of pus. The NHS describes a dental abscess as a build-up of pus in the teeth or gums caused by an infection. Your body sends white blood cells to fight the bacteria, and the mix of dead cells, bacteria, and fluid collects in one spot.

In the gum, that spot looks like a swollen, red, tender lump beside a tooth. It hurts when you press on it or bite.

The American Dental Association's MouthHealthy site lists the usual symptoms as pain, swelling, redness in the gums, a bad taste in the mouth, and fever. It adds that an untreated abscess can lead to a serious infection in the jaw bone, teeth, and surrounding tissues.

Gum Abscess vs Tooth Abscess

People use "gum abscess" and "tooth abscess" as if they were the same thing. Dentists separate them by where the infection starts.

Mayo Clinic describes two types. A periapical abscess forms at the tip of a tooth root. A periodontal abscess forms in the gums at the side of a tooth root. A true gum abscess is the second kind, which dentists call a periodontal abscess.

• Periodontal (gum) abscess: starts in the gum tissue beside the tooth, often in a deep gum pocket where bacteria and debris get trapped.
• Periapical (tooth) abscess: starts inside the tooth, usually after decay, a crack, or an injury lets bacteria reach the pulp.

You cannot tell them apart in the mirror. Both can raise a bump on the gum. A dentist uses an exam and often an X-ray to decide which one you have, because the treatment differs.

Our guide on how to reverse gum disease explains how gum disease creates the deep pockets where a gum abscess can form.

Gum Abscess Symptoms

The NHS lists these symptoms for a dental abscess:

• Intense toothache or gum pain.
• Redness inside the mouth, or on the face or jaw.
• Sensitivity to hot or cold food and drink.
• A bad taste in the mouth.
• Difficulty opening the mouth and chewing.
• A swollen face or jaw.
• Swollen glands on each side of the neck.
• A high temperature.

Not everyone has all of these. A small gum abscess may start as one tender, shiny bump, sometimes like a pimple on the gum.

Mayo Clinic notes that a tooth abscess typically causes a severe, constant, throbbing toothache that can spread to the jawbone, neck, or ear.

Pay attention to how fast things change. An abscess that grows over hours, or comes with a fever, is behaving like an infection that is spreading.

When a Gum Abscess Is an Emergency

Most abscesses need a same-day or next-day dental visit. A few need an emergency department. The NHS tells people to call 999 or go to A&E if they:

• Find it hard to breathe, speak, or swallow.
• Have a swollen or painful eye, or sudden eyesight problems.
• Have a lot of swelling in the mouth.
• Find it hard to open the mouth.

The NHS also says not to drive yourself, and to bring any medicines you take. In the United States, call 911 or go to the nearest emergency room.

Why the urgency? A dental infection can spread into the floor of the mouth and the neck. Cleveland Clinic explains that Ludwig angina is a bacterial infection of the floor of the mouth and neck. It says an abscessed lower molar is the most common cause, starting over 90% of cases.

Cleveland Clinic calls Ludwig angina a medical emergency that can be fatal without treatment. Warning signs include difficulty breathing or swallowing, drooling, jaw or neck swelling, a swollen tongue, and slurred speech. Early treatment greatly improves the outlook.

This is rare. Most gum abscesses never get near this stage, but the warning signs are worth knowing.

What Causes a Gum Abscess

A gum abscess forms when bacteria get into the gum tissue and the body cannot clear them. The NHS names several causes of dental abscesses: tooth decay, gum disease, impacted teeth, mouth injuries, and radiotherapy or chemotherapy. MouthHealthy lists tooth decay, periodontal disease, and a cracked tooth.

Gum disease and deep pockets

Gum disease is the classic setting for a periodontal abscess. When plaque and tartar sit under the gumline, the gum pulls away from the tooth and forms a pocket where bacteria collect. A blocked pocket can leave the infection nowhere to drain.

Plaque is the starting point. Our guides on how to get rid of plaque and how to stop bleeding gums cover the basics.

Trapped debris, injury, and decay

A piece of food or a fragment of floss can lodge under the gum, and an injury can break the tissue and let bacteria in. Decay that reaches the pulp can also cause an abscess at the root, which then shows as a bump on the gum. Our guide on how to stop tooth decay covers how cavities progress.

Why a Gum Abscess Will Not Go Away on Its Own

Sometimes the pain drops, or the lump seems to shrink. It can feel like the problem is solving itself.

It is not. The NHS says a dental abscess will not go away on its own. The cause is still there: the trapped bacteria, the deep pocket, the decayed tooth, or the lodged object. Until a dentist deals with it, the infection can flare up again or spread.

Mayo Clinic warns that leaving an abscess untreated can lead to serious, even life-threatening, complications. MouthHealthy says an untreated abscess can spread to the jaw bone and surrounding tissues. So even if the pain fades, book the visit.

How a Dentist Treats a Gum Abscess

Treatment has two jobs: get rid of the pus, and fix whatever caused it. The NHS says a dentist will drain the pus, and that you will have local anaesthetic so you do not feel pain. If a problem with the tooth caused the abscess, you may need root canal treatment, or the tooth may need to be removed.

For a periodontal abscess, a 2017 review in Current Oral Health Reports describes drainage as the first step. It says antimicrobial therapy is considered when drainage is not possible or is not enough. In practice, the dentist or periodontist usually:

• Numbs the area.
• Drains the abscess, through the gum pocket or with a small cut.
• Cleans out the pocket to remove plaque, tartar, and debris.
• Decides whether you need antibiotics, a follow-up cleaning, or further treatment of the tooth.

MouthHealthy lists the same set of tools: antibiotics, drainage, cleaning between the tooth and gum when gum disease is the cause, and root canal treatment when decay or a crack is the cause.

Do you need antibiotics?

Sometimes, but not always. Antibiotics do not replace drainage. They are used for infections that are spreading or when treatment cannot happen right away.

The American Dental Association's 2019 guideline, as reported by DrBicuspid, advises against antibiotics for most toothaches. It says healthy adults with pulp necrosis and a localized acute apical abscess should get antibiotics when dental treatment is not available. It also recommends them when the person has systemic symptoms such as malaise or fever, and it says treatment should not be delayed.

That guideline covers tooth-root abscesses, so it is not a rule for every gum abscess. Only a dentist or doctor who has examined you can say whether you need antibiotics. Never take leftover antibiotics from an old prescription.

What Helps While You Wait for Your Appointment

These steps ease discomfort. They do not treat the infection.

• Call a dentist now. Say the words "possible abscess" and ask for an urgent slot. In the UK, NHS 111 can direct you if your dentist is closed.
• Take over-the-counter pain relief. The NHS suggests ibuprofen or paracetamol. Do not take more than the recommended dose, and do not give aspirin to children under 16. If you take other medicines or have a health condition, ask a pharmacist which painkiller is safe for you.
• Eat soft foods. Avoid very hot, very cold, or very sugary food and drink.
• Rinse with warm salt water. It is a comfort measure only. It will not cure an abscess.

What Not to Do

A few common habits can turn a manageable problem into a worse one.

• Do not pop, squeeze, or lance it. Needles, pins, and fingernails push bacteria deeper and introduce new ones. A dentist drains it in a clean setting with anaesthetic.
• Do not wait for it to burst. Even if it drains, the cause is still there.
• Do not smoke. The NHS lists smoking among the things to avoid when you have an abscess.
• Do not use mouthwash straight after brushing. The NHS advises against it, because it rinses off the fluoride.
• Do not stop prescribed medicines on your own. Keep taking them unless your doctor tells you otherwise, and tell the dentist what you take.

Is It a Gum Abscess or Something Else?

Puffy gums along several teeth, with bleeding but little pain, point to gingivitis rather than an abscess. A shallow ulcer with a red edge is more likely a canker sore. Treat any lump that is painful, growing, or paired with fever as an abscess until a dentist says otherwise. For a broader look at why gums swell, see our guide to swollen gums causes.

How to Lower Your Risk of Another Abscess

The NHS lists these steps for preventing dental abscesses:

• Brush with fluoride toothpaste at least twice a day, and spit without rinsing.
• Clean between your teeth daily with floss or interdental brushes.
• Go to regular dental check-ups so problems are caught early.

MouthHealthy gives similar advice and adds that if a tooth becomes loose or chipped, you should see a dentist as soon as possible. If you have had one periodontal abscess, ask your dentist how often you should be cleaned.

Where Gum Supplements Fit, and Where They Do Not

No supplement treats a gum abscess. None drains pus, clears a bacterial infection, or replaces a dental exam. If you have an abscess, the answer is a dentist, not a bottle.

Some readers add a gum-focused product to a good hygiene routine once the infection is treated. In our full Dentitox Pro review, we looked at one product built around gum and enamel support. The sales page does not publish exact ingredient amounts, so you cannot judge dosing from the label. It comes with a 60-day money-back guarantee.

The review is clear about its limits: anyone with an active infection, loose teeth, or pus around the gumline should see a dentist first. If you take prescription medicine or have a medical condition, ask your doctor or pharmacist before adding a supplement. This page does not recommend any product as a treatment for an abscess.

When to See a Dentist or Doctor

Book an urgent dental appointment for any swollen, tender lump on the gum. Do not wait to see if it settles.

Go to an emergency department or call emergency services if you notice any of these:

• Trouble breathing, speaking, or swallowing.
• Swelling of the face, jaw, neck, or under the tongue.
• A fever or chills with tooth or gum pain.
• A swollen or painful eye, or sudden vision changes.
• Trouble opening your mouth.

At the visit, the dentist will look at the gum, press on the area, test the nearby teeth, and probably take an X-ray. You should leave knowing what caused the abscess and how to keep it from coming back.

Frequently Asked Questions