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Emergency Dental Care

Dental Abscess: Symptoms, Dangers, and Treatment

A dental abscess is an infection that will not resolve on its own and can spread to other areas. Learn the symptoms, when it becomes dangerous, and treatment options.

D Dr. Scott Bonin
  • Emergency Dentistry
  • Root Canals
  • Dental Health
Bonin Dental Care office entrance in Windsor, CA

A dental abscess is a localized bacterial infection that forms at the tip of a tooth root or in the space between the tooth and gum. It is a serious condition that will not resolve on its own and poses real risks if left untreated. An abscess occurs when bacteria enter the tooth and multiply in the pulp chamber, eventually spreading to the bone and soft tissues at the root tip. This creates a pocket of pus that causes pain, swelling, and potentially dangerous complications if the infection spreads beyond the immediate area.

Types of Dental Abscess

There are two main types of dental abscess. A periapical abscess forms at the tip of the root beneath the tooth, usually as a result of deep decay or trauma that kills the nerve inside the tooth. The bacteria in the dead nerve tissue multiply and spread to the surrounding bone.

A periodontal abscess occurs in the space between the tooth and gum, usually as a result of advanced gum disease, a deep periodontal pocket, or a foreign object lodged between the tooth and gum. This type is sometimes called a gum abscess.

Both types require professional treatment from a dentist.

Symptoms You Should Recognize

The most common symptom of a dental abscess is pain that is often severe and throbbing. You may notice pain when biting or chewing. Facial swelling, most noticeable on the side with the abscess, is a hallmark sign. The swelling can be dramatic, sometimes puffing out the cheek or the side of the face noticeably. You might also see or feel a small pimple-like bump on the gum near the affected tooth. This is where pus is draining.

Additional symptoms can include fever, difficulty swallowing, difficulty chewing, or a bad taste in the mouth. Some people experience swollen lymph nodes under the jaw or in the neck. The tooth may feel slightly loose or stand out higher than surrounding teeth because of inflammation of the tissues around it.

An abscess does not always announce itself with pain. Some people have a chronic low-grade abscess that causes minimal symptoms but continues to cause slow destruction of bone around the root. This is why regular dental cleanings and exams are important; Dr. Bonin can sometimes spot an abscess on X-rays before you feel any symptoms.

Why an Abscess Is Dangerous

An abscess is not just uncomfortable; it is a genuine health risk. The infection is localized at the moment you notice it, but it can spread. If the infection spreads into the bloodstream, it can reach the brain, the heart, or other vital organs, leading to serious systemic infection. While this is relatively rare, it is a real possibility, especially if the abscess is left untreated for an extended period.

The infection can also spread to the sinuses, particularly if the abscess is in an upper tooth, causing sinus infection. It can create a channel or fistula that allows pus to drain externally, creating a chronic, slow-healing wound. It can destroy bone around the tooth root, eventually compromising the structural integrity of the tooth and the surrounding bone.

An abscess will not heal on its own. Unlike a minor wound or infection elsewhere on the body, the bacteria inside an abscess cannot be reached by your immune system effectively, and the infection will persist and potentially worsen without professional intervention.

What to Do If You Suspect an Abscess

If you have symptoms of a dental abscess, contact Bonin Dental Care immediately. Call ahead to alert us to your symptoms so we can try to fit you in for an emergency visit. Do not wait for a regular appointment if you have facial swelling, fever, or difficulty swallowing. These are signs the infection is more advanced.

While waiting for your appointment, you can apply a warm compress to the outside of your face to help relieve pain and encourage drainage if pus is draining through the gum. Rinse gently with warm salt water a few times per day. Over-the-counter pain relievers can help manage discomfort. However, these are supportive measures only and are not a substitute for professional treatment.

Treatment Options

Dr. Bonin will examine the tooth and take X-rays to confirm the abscess. For a periapical abscess, the treatment usually involves root canal therapy. This procedure removes the infected nerve tissue and bacteria from inside the tooth, allowing the infection to clear. Once the infection is cleared and the tooth has healed, a crown is typically placed to protect and restore the tooth.

For a periodontal abscess, treatment focuses on the gum and bone. Dr. Bonin may perform scaling and root planing to remove bacteria and calculus from the pocket, or may recommend more advanced gum disease treatment. In some cases, if the abscess is in a tooth with advanced bone loss, extraction of the tooth becomes necessary.

In some cases, if the abscess is very severe or if swelling is significant, Dr. Bonin may prescribe antibiotics before proceeding with the definitive treatment. However, antibiotics alone do not cure an abscess; they support the immune system while the underlying cause is treated.

Prevention and Follow-Up

The best way to prevent an abscess is to maintain excellent oral hygiene, see Dr. Bonin for regular dental cleanings and exams, and treat dental problems like decay and gum disease promptly before they lead to abscess formation. If you have previously had an abscess, be especially vigilant about general dentistry visits and home care, as the tooth is at higher risk for future problems.

After treatment of an abscess, follow-up care is important. You will likely need periodic X-rays to ensure the bone is healing and the infection is not returning. Maintain meticulous oral hygiene and continue regular dental visits.

An abscess is a signal that infection has taken hold in your mouth, and it demands professional attention. Do not minimize the symptoms or delay seeking treatment. Contact Bonin Dental Care at the first sign of an abscess, and Dr. Bonin will work to eliminate the infection and save or replace the affected tooth.

Learn more about the author Dr. Scott Bonin

Written by

Dr. Scott Bonin, DDS

General and cosmetic dentist at Bonin Dental Care in Windsor, California. USC School of Dentistry graduate, Navy veteran, and member of the American Dental Association, California Dental Association, and American Academy of Cosmetic Dentistry. Over 24 years of clinical experience serving Sonoma County families.

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Clinical note: This article is for educational purposes and does not replace a professional examination. Every patient's situation is unique. If you have questions about your specific dental health, please schedule an appointment or call (707) 838-1400.