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Oral Infections: Signs and Treatment

Oct 14, 2025

Around 42% of adults over 30 in the United States have periodontitis, and that’s just one of many types of infection that can affect the mouth.

These infections develop when harmful bacteria, fungi, or viruses invade your teeth, gums, tongue, or jawbone. While some infections are mild, others may cause pain, swelling, and severe complications if left untreated.

At Llanos Dental Group, we believe in helping patients understand the warning signs of infection and the treatments that can restore a healthy smile. 

Knowing what to look for and when to seek help is the first step toward preventing more serious issues.

Understanding oral infections

Common types of oral infections include:

Gum disease

Gum infections can cause redness, bleeding, and eventually, bone loss. Gingivitis is a mild gum infection that develops into periodontitis if left untreated.

Dental abscesses

Abscesses are pus-filled pockets caused by untreated tooth decay or gum disease.

Thrush (oral candidiasis)

Thrush is a fungal infection that often appears as white patches on the tongue or cheeks.

Viral infections

Viruses that infect the mouth include cold sores caused by the herpes simplex virus.

Early detection makes treating oral infections much easier. Watch for these common warning signs:

  • Tooth pain or sensitivity, especially if it lingers or worsens when chewing
  • Swelling in the gums or face, which may indicate an abscess
  • Red, bleeding, or tender gums are typical of gum disease
  • White or yellow patches in the mouth that point to thrush or another infection
  • Halitosis (bad breath) or a bad taste, often due to bacterial infection
  • Fever or swollen lymph nodes, which can signal that the infection is spreading

If you notice one or more of these symptoms, don’t wait. Oral infections rarely improve on their own and usually require professional treatment.

Treating oral infections

Oral infection treatment depends on the type and severity of the infection. At Llanos Dental Group, we tailor care to each patient’s needs. 

Common treatments include:

Antibiotics

Antibiotics fight bacterial infections and prevent them from spreading.

Antifungal or antiviral medications

These medicines fight infections caused by yeasts or viruses.

Professional deep cleaning

A thorough cleaning or scaling and root planing treats gum disease by removing tartar (hardened plaque) and harmful bacteria from below the gumline.

Drainage of abscesses

Draining the fluid and pus inside an abscess relieves pressure and pain.

Root canal therapy

Root canals save infected teeth. During the procedure, Dr. Llanos removes diseased pulp from inside the tooth, cleans and sterilizes the space, and seals it to prevent further infection.

In severe cases, extraction of a badly infected tooth may be necessary. However, we always aim to preserve natural teeth whenever possible.

Ignoring oral infections can lead to serious health risks. An untreated abscess, for example, may spread to the jaw, neck, or bloodstream, creating a life-threatening emergency.

Your mouth also has a significant influence on your overall health, making it even more important to address problems promptly. For instance, gum infections can lead to tooth loss but also have links to conditions such as heart disease and diabetes.

Preventing oral infections

The best approach to fighting oral infections is preventive dentistry. Simple habits can make a significant difference:

  • Brush twice a day with fluoride toothpaste
  • Floss daily to remove plaque between teeth
  • Replace your toothbrush every three to four months
  • Avoid smoking or chewing tobacco, which weakens your mouth’s defenses
  • Eat a balanced diet and limit sugary snacks and drinks
  • Attend your dentist regularly for checkups and cleanings

Understanding how to care for your teeth and gums helps reduce your risk of infection and keeps your smile healthy.

When to call the dentist

Don’t ignore pain, swelling, or bleeding gums. Call us for any of the following problems:

  • Severe or ongoing tooth pain
  • A visible lump or swelling in your mouth or jaw
  • Fever combined with dental pain
  • Difficulty swallowing or opening your mouth
  • Bleeding that doesn’t stop

Getting help early prevents complications and usually means treatment is simpler and more effective. Our team provides compassionate, expert care to treat infections and protect your oral health.

If you notice any signs of infection, don’t wait — your health and comfort depend on prompt action. Schedule an appointment with Llanos Dental Group by phone or online to keep your smile healthy and pain-free.