What Causes Facial Swelling from a Tooth?

Most dental infections begin when bacteria enter the inside of a tooth through deep decay, a crack, or previous trauma. Once the nerve inside the tooth becomes infected or dies, bacteria can spread through the root into the surrounding bone and soft tissues.

Common causes include:

• Untreated tooth decay (cavities)
• A cracked or fractured tooth
• A dead or infected tooth nerve (necrotic pulp)
• A tooth abscess
• Advanced gum disease
• Complications involving partially erupted wisdom teeth (pericoronitis)

Without treatment, the infection may continue to spread.

Signs and Symptoms

A dental infection may cause:

• Swelling of the gums, cheek, jaw, or face
• Severe or throbbing tooth pain
• Pain when chewing or biting
• A bad taste or drainage in the mouth
• Swollen lymph nodes
• Fever or chills
• Difficulty opening your mouth
• General feeling of illness

In some cases, swelling may appear even after the tooth pain has improved.

When Should You Seek Immediate Care?

Facial swelling caused by a tooth should never be ignored.

Contact our office as soon as possible if you notice:

• Swelling of your face or jaw
• Increasing pain
• Swelling around a tooth or gums
• Drainage of pus
• Fever

Seek emergency medical care immediately if you experience:

• Difficulty breathing
• Difficulty swallowing
• Rapidly increasing facial swelling
• Swelling affecting your eye or neck

These symptoms may indicate that the infection is spreading and requires immediate medical attention.

How Is a Tooth Infection Diagnosed?

Determining the source of the infection begins with a thorough examination.

During your visit, Dr. Omeltschenko may evaluate:

• Digital X-rays
• Clinical photographs
• The condition of the affected tooth
• Swelling and drainage
• The health of the tooth’s nerve
• Existing fillings or crowns
• Gum health
• Bite and surrounding teeth

Once the source of the infection has been identified, we will discuss the treatment options most appropriate for your situation.

What Happens If a Tooth Infection Is Left Untreated?

A dental infection will not resolve on its own.

Without treatment, the infection may lead to:

• Increasing pain and swelling
• Destruction of bone around the tooth
• Spread of infection into surrounding tissues
• Tooth loss
• Difficulty eating or speaking
• Serious medical complications

Prompt treatment is the best way to protect both your oral health and your overall health.

Possible Treatment Options

Treatment depends on the cause and severity of the infection.

Possible treatment options include:

• Root Canal Therapy – to remove the infected tissue and preserve the natural tooth whenever possible.

• Dental Crown – often recommended after root canal therapy to restore strength and protect the tooth.

• Tooth Extraction – when the tooth cannot be predictably restored.

• Antibiotics – may be prescribed when swelling has spread beyond the tooth or when additional support is needed to help control the infection. Antibiotics alone do not eliminate the source of the infection and should not be considered a substitute for dental treatment.

Whenever possible, our goal is to save your natural tooth. If that is not possible, we will discuss replacement options to restore your smile and oral function.