Tooth Abscess: Symptoms, Treatment, and What It Costs

A tooth abscess is a pocket of pus caused by a bacterial infection at or near the root of a tooth or in the surrounding gum tissue. According to the Mayo Clinic, dental abscesses can cause severe, persistent pain and, if left untreated, can spread to surrounding tissue and bone. They are among the more serious dental conditions commonly seen in practice precisely because many patients delay care, hoping the pain will resolve or that antibiotics alone will be sufficient.

This guide explains what causes a dental abscess, how to recognize the symptoms, what treatment typically involves, and what a range of approaches may cost. Understanding these factors can help you act promptly and have a productive conversation with your dentist or emergency provider.

What Is a Tooth Abscess?

The American Association of Endodontists (AAE) describes a dental abscess as a localized collection of pus resulting from a bacterial infection. There are two main types:

Periapical abscess. This type forms at the tip of the tooth root, typically because decay has progressed through the enamel and dentin into the pulp -- the soft tissue containing nerves and blood vessels -- allowing bacteria to enter and cause infection. It is the most common type of dental abscess and is often associated with a tooth that needed but did not receive root canal treatment.

Periodontal abscess. This type originates in the gum or bone tissue adjacent to the tooth root rather than inside the tooth itself. According to the American Academy of Periodontology, periodontal abscesses are often associated with advanced gum disease, where bacteria become trapped in deepened pockets between the gum and tooth root.

Both types involve infection that will not resolve without professional intervention.

Illustration: approximate location of the two main types of dental abscess. Actual anatomy is more complex; diagnosis requires clinical examination and imaging.

Symptoms of a Dental Abscess

The Mayo Clinic lists the following as commonly reported symptoms of a dental abscess. Not all symptoms will be present in every case:

• Severe, persistent, throbbing toothache that may radiate to the jaw, neck, or ear
• Sensitivity to hot and cold that may be more intense and linger longer than typical sensitivity
• Pain with biting or chewing
• Fever
• Swelling in the face, cheek, or jaw
• Tender, swollen lymph nodes under the jaw or in the neck
• A sudden rush of foul-tasting, salty fluid in the mouth (which may indicate the abscess has ruptured)
• Difficulty opening the mouth, or -- in more serious cases -- difficulty swallowing or breathing

If you experience swelling that extends to the neck, difficulty breathing or swallowing, or high fever alongside dental pain, seek urgent care without waiting for a regular dental appointment. These may indicate spread of infection beyond the immediate tooth area.

When Is a Tooth Abscess a Dental Emergency?

All dental abscesses require professional treatment, but some situations are more urgent than others. The following warrant same-day or urgent care:

• Swelling in the face or neck that is visibly increasing
• Difficulty opening the mouth, swallowing, or breathing
• Fever of 101 degrees Fahrenheit or higher
• The infection appears to be spreading (increasing redness or warmth beyond the original site)

A dental abscess that has not yet caused systemic symptoms (fever, swelling beyond the jaw, difficulty swallowing) still requires prompt attention -- ideally within 24 to 48 hours -- to begin draining the infection and determining the best treatment approach.

How Is a Tooth Abscess Treated?

Treatment always aims to eliminate the infection, preserve the tooth if possible, and prevent recurrence. The specific approach depends on the type and severity of the abscess, according to the Mayo Clinic and the American Association of Endodontists.

Drainage. The immediate priority is draining the pus from the abscess to relieve pressure and remove infectious material. For a periapical abscess, drainage may occur through a root canal procedure. For a periodontal abscess, the dentist may make a small incision in the gum tissue to drain the pocket.

Root canal treatment. For a periapical abscess caused by pulp infection, a root canal removes the infected tissue from inside the tooth, cleans and seals the root canals, and is typically followed by a crown to protect the treated tooth. The American Association of Endodontists notes that root canal treatment has a high success rate for saving abscessed teeth and relieving the pain associated with pulp infection.

Tooth extraction. When the tooth is too damaged to be saved -- due to severe decay, root fracture, or insufficient remaining structure -- extraction removes the source of infection. The AAE notes that a missing tooth should ideally be replaced to preserve bite alignment, which is an additional cost and consideration.

Antibiotics. A course of antibiotics may be prescribed alongside drainage or root canal treatment to help control the spread of infection, particularly when there is fever or regional swelling. The Mayo Clinic is explicit that antibiotics alone are not sufficient to treat a dental abscess -- they must be paired with definitive drainage and treatment of the infection source.

For broader guidance on what to do when dental pain escalates, see our guide on what to do in a dental emergency.

How Much Does Abscess Treatment Cost?

Treatment costs for a dental abscess range considerably depending on what approach is needed. The table below presents approximate national ranges based on American Dental Association fee survey data and published insurer cost resources.

Sources: American Dental Association Health Policy Institute fee survey data; CareCredit dental cost guide. Figures are approximate national ranges. Actual fees depend on the provider, region, procedure complexity, and insurance plan.

Illustration: approximate lower-end cost ranges for key treatment components. A typical case requiring drainage plus root canal plus crown may involve multiple components. Actual fees vary significantly.

Can a Tooth Abscess Spread? Understanding the Risks

The concern about dental abscesses spreading beyond the tooth is clinically real, though serious spread is not the typical outcome when patients seek care promptly. According to the NIH National Institute of Dental and Craniofacial Research (NIDCR), dental infections that are not treated can spread to adjacent teeth, the jawbone, and in more serious cases to the soft tissues of the neck and throat.

Ludwig's angina -- a potentially serious infection of the floor of the mouth -- and other deep-space infections of the neck are well-documented complications of untreated lower jaw dental abscesses, according to published clinical literature. These are relatively uncommon outcomes, but they represent the serious end of the spectrum of untreated dental infection. The Mayo Clinic lists difficulty breathing and difficulty swallowing as warning signs that an infection has spread and require emergency care, not a next-available dental appointment.

Prompt treatment dramatically reduces the risk of spread. The most important step is to contact a dental provider -- or seek urgent care -- as soon as an abscess is suspected.

What Not to Do With a Tooth Abscess

Several approaches that patients sometimes try can delay appropriate care or cause harm:

• Do not assume antibiotics alone will resolve the abscess. As noted above, antibiotics manage infection spread but do not drain the abscess or address its underlying cause.
• Do not try to drain the abscess yourself. Self-lancing can push bacteria deeper into the tissue and introduce new contamination.
• Do not delay care because the pain temporarily decreases. A reduction in pain can occur if the abscess ruptures spontaneously, but the infection source remains and the abscess can reform.
• Do not ignore swelling in the face, neck, or floor of the mouth. This is a sign that the infection may be spreading and requires urgent evaluation.

How to Reduce Your Risk of Future Abscesses

The most effective prevention for periapical abscesses is addressing cavities before they reach the pulp, according to the American Dental Association. Regular dental exams allow providers to identify and treat decay in earlier stages, when a filling is sufficient and no root canal is needed. For periodontal abscesses, managing gum disease through regular professional cleanings and good home care is the primary prevention strategy.

For guidance on finding a provider you trust to manage both preventive and urgent care, see our guide on how to choose a dentist.

For patients managing dental costs when coverage is limited, see our guide on tooth extraction cost and root canal cost.