What is a Tooth Abscess?

Key Takeaways
Dr. Dt. Ennur Ecem Aydın
Written by DentAkademi Editorial Team
Medically reviewed by Dr. Dt. Ennur Ecem Aydın
Last updated:

A tooth abscess is a pus-filled pocket caused by a bacterial infection. An abscessed tooth can cause moderate to severe pain, which can sometimes be felt in the ear and neck. If left untreated, a tooth abscess can develop into a serious health condition.

What Causes a Tooth Abscess?

Bacteria, gum diseases, and foreign objects lodged in the gums can lead to the formation of a tooth abscess. If there is tooth decay, a fracture, or a crack in the tooth, an abscess may develop. Openings in the tooth enamel allow bacteria to reach the pulp, which is the tooth’s center. The infection in the area can spread to the bone supporting the tooth.

The pus that accumulates due to the infection causes tissue swelling inside the tooth. The size of the swelling indicates the severity of the infection. This leads to tooth pain. If the pressure decreases, the pain may subside, but the infection remains active and continues to spread. In addition to pain management, the infection must also be treated.

What Are the Symptoms of a Tooth Abscess?

Severe tooth pain, a bitter taste in the mouth, bad breath, fever, swelling over the infected tooth, and pain while chewing are among the symptoms of a tooth abscess.

The symptoms of a tooth abscess include:

  • Throbbing and persistent pain

  • Bitter taste in the mouth

  • Bad breath

  • Pimple-like swelling on the gums

  • Tooth sensitivity to hot or cold foods

  • General discomfort and fatigue

  • Fever

  • Swollen lymph nodes in the neck

  • Swelling in the upper or lower jaw (a very serious symptom)

Throbbing and Persistent Pain

The most prominent symptom of a tooth abscess is severe, throbbing pain that does not go away. This pain can worsen over time and may increase while eating, speaking, or even during sleep.

Bitter Taste in the Mouth

People with a tooth abscess may experience a persistent bad taste in their mouth due to pus leakage from the infection. The bitter taste becomes more noticeable, especially when swallowing.

Bad Breath

A bad taste in the mouth due to a tooth abscess is usually accompanied by bad breath (halitosis). The bacterial infection from the abscess produces foul-smelling gases.

Pimple-like Swelling on the Gums

Around an abscessed tooth, a swelling filled with pus, sometimes white or yellow in color, may form. This swelling may look like a small pimple and can occasionally burst, releasing foul-smelling fluid into the mouth.

Sensitivity to Hot and Cold

People with a tooth abscess may feel sharp pain when consuming hot or cold foods and drinks. This sensitivity occurs because the abscess puts pressure on the tooth nerves, making the pain unbearable over time.

General Discomfort and Fatigue

As the infection progresses, the immune system responds, making the person feel weak, exhausted, and unwell.

High Fever

A painful tooth abscess can cause fever as the body tries to fight the infection. Mild fever is a normal immune response, but persistent high fever may indicate a severe infection.

Swollen Lymph Nodes in the Neck

Due to the infection in the tooth, the lymph nodes, which are part of the immune system, may swell. If swelling and tenderness in the neck’s lymph nodes are noticeable, the infection may be spreading.

Swelling in the Upper or Lower Jaw

If a tooth abscess progresses, the infection may spread from the gums to the jawbone, causing swelling in the upper or lower jaw. If jaw stiffness, pain, or swelling occurs, the infection may have reached a severe stage.

CategoryKey PointsExplanation
Main CausesTooth decay, cracks, gum diseaseBacteria enter through cavities, fractures, or inflamed gums and reach the tooth pulp, leading to infection and pus formation
Typical SymptomsSevere pain, swelling, bad breathThrobbing toothache, gum swelling, bitter taste, fever, and swollen lymph nodes are common warning signs
Pain RadiationEar, jaw, neckDue to shared nerve pathways, abscess pain may spread beyond the tooth area
Possible ComplicationsJawbone infection, systemic spreadUntreated abscesses can spread to the jaw, neck, or bloodstream and become life-threatening
Primary TreatmentsDrainage, root canal, extractionThe abscess is drained, infection is removed via root canal, or the tooth is extracted if unsalvageable
Supportive CareAntibiotics, antiseptic rinsesUsed to control infection, especially in severe or spreading cases
Home Relief (Temporary)Saltwater, cold compressHelps reduce discomfort but does not replace professional dental treatment

How to Treat a Tooth Abscess?

If a tooth abscess is caused by periodontal disease (gum disease), the dentist first treats the underlying condition to prevent recurrent infections. However, for immediate relief, the abscess may be drained.

If the infection originates inside the tooth, a small opening is made to allow the pus to drain. Then, a root canal treatment is performed, and the tooth is protected with a filling or crown. If the abscess has severely damaged the tooth or has grown too large, the tooth may need to be extracted completely.

Home Remedies for Tooth Abscess

Some home remedies that can help alleviate a tooth abscess include saltwater gargling, baking soda, thyme oil, cold compress, hydrogen peroxide, and garlic.

Here are some natural remedies for a tooth abscess:

  • Saltwater gargle

  • Baking soda

  • Thyme oil

  • Cold compress

  • Fenugreek tea

  • Clove oil

  • Hydrogen peroxide

  • Garlic

What Happens If a Tooth Abscess Bursts?

A tooth abscess bursting on its own can be alarming and uncomfortable. Fortunately, some practical steps can help prevent the spread of bacteria in the mouth.

The first thing you should do is visit a dentist as soon as possible. The dentist will professionally clean the pus from the abscess and rinse your mouth to prevent the infection from spreading.

If you cannot see a dentist immediately, make sure the pus has fully drained. After the pus is released, rinse your mouth with saltwater. Mix a teaspoon of salt in a glass of warm water and swish it around your mouth.

Following the saltwater rinse, use an alcohol-free antibacterial mouthwash to further clean your mouth.

Note: A tooth abscess is a serious infection that should not be ignored. Even if it bursts on its own, you must see a dentist for proper treatment and professional care.

Frequently Asked Questions About Tooth Abscess

How can a tooth abscess heal the fastest?

A tooth abscess heals fastest with dental treatment, usually requiring pus drainage and antibiotics. Home remedies like saltwater gargling can provide temporary relief, but professional care is essential.

Yes, a tooth abscess can be dangerous as the infection may spread to the jawbone, bloodstream, or other organs, leading to serious health complications if untreated.

A dentist numbs the affected area, makes a small incision in the abscess, and drains the pus. The area is then cleaned, and additional treatments like root canals or extractions may be required.

A bursting tooth abscess is usually not fatal, but if the infection is not controlled, it can lead to severe complications like sepsis.

No, popping a tooth abscess at home is not recommended, as it can spread the infection and worsen the condition.

No, a tooth abscess lasting for a month is not normal and may indicate a chronic infection that requires immediate dental attention.

With dental intervention, a tooth abscess typically starts improving within 2-3 days, but full recovery may take several weeks.

Yes, you should continue brushing your teeth even with an abscess, but use a soft brush and gentle movements.

A pulsing sensation in a tooth is caused by increased blood flow and inflammation due to an abscess or infection.

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