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Understanding oral and bacterial infections

Understand the causes and treatments to effectively manage oral infections

Oral infections can be complex, often surfacing without obvious signs until they cause discomfort. Bacteria exploit even small vulnerabilities to cause these infections, which can affect your overall health and well-being. In some cases, untreated oral infections may lead to life-threatening conditions such as sepsis in the body. At Aspen Dental, we're committed to helping you understand and manage oral infections effectively, ensuring your oral health is well maintained. 

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Four illustrations show dental conditions: tooth decay on top left, gum disease on top right, oral thrush on bottom left, and dental abscess on bottom right corner.

What are oral infections?

Oral infections encompass conditions like tooth decay, gum disease, dental abscess and oral thrush. These dental issues often start small due to poor oral hygiene, lifestyle choices, or other health complications but can escalate if not promptly addressed. 

The role of bacteria in oral health

Our mouths contain a diverse ecosystem of microbes that must stay balanced to prevent disease. When harmful bacteria overgrow, often due to plaque buildup, oral infections can occur. Regular dental hygiene and dental check-ups at your local Aspen Dental clinic are great ways to maintain this balance and protect your oral health.

Common types of oral bacterial infections

Bacterial infections can take various forms, and understanding what they are is the first step in properly addressing them.

Diagram of a tooth with a cavity showing the internal structure, including nerves and blood vessels. The area around the root is highlighted in red, indicating dental abscess formation due to tooth decay.

Dental caries (tooth decay)

  • Bacteria in your mouth feed on carbohydrates (sugars and starches), producing acid that eats away at the enamel on your teeth, causing cavities.

  • Symptoms include toothache from sweets, cold, or hot stimuli. 

  • Early detection is crucial to prevent further decay. 

    Explore cavities >

 Illustration of a tooth with visible tartar build-up at the gum line and slight gum recession, highlighting the internal structure of the tooth and surrounding jawbone as it relates to periodontal disease.

Periodontal disease (gum disease)

A person with their mouth open shows their tongue with a white coating, suggesting oral thrush. An inset magnifies the coating, providing a closer view of the infection.

Thrush (oral candidiasis) & halitosis (bad breath)

  • Occurs when Candida yeast overgrows, causing white or red patches in the mouth. 

  • More common in those with weakened immune systems or disrupted oral microflora. 

  • Symptoms include soreness and difficulty swallowing. 

  • Persistent bad breath might indicate gum disease, dental abscesses, or thrush. 

Cross-section diagram of a tooth showing decay reaching the pulp, with a circled dental abscess at the root tip surrounded by red inflamed tissue indicating infection.

Abscesses

  • Painful pus pockets in teeth due to bacterial infection. 

  • Symptoms include severe pain, red and swollen gums, foul taste, and fever. 

  • Requires urgent dental care.

  • Abscesses on upper teeth may mimic or cause symptoms similar to sinusitis, so be mindful and always seek professional advice.  

Causes of bacterial infection in mouth and risk factors

Poor oral hygiene practices

Neglecting dental care can provide an open invitation for bacteria. Without proper brushing, flossing, and tongue cleaning, these microbes can flourish and wreak havoc. It’s also important to clean dentures, mouthguards, and retainers as they contribute to candidiasis.

Diet

A diet high in sugary and starchy foods can feed the bacteria that cause dental caries. Conversely, a diet rich in fruits and vegetables can help prevent infections.

Smoking and alcohol use

These are major risk factors for a variety of oral infections, including gum disease and mouth cancer.

Medical conditions that increase risk

Certain medical conditions can also increase vulnerability to oral infections, such as diabetes and immune disorders

Symptoms of oral and bacterial infections

Symptoms of oral infections vary based on the type of infection, but key signs include:

Gum inflammation

Look for red, swollen, or bleeding gums, which could indicate early-stage gingivitis. Left untreated, this may advance to periodontitis, leading to tooth loss and tissue damage.



Learn more about gum disease

Tooth sensitivity

If your teeth react strongly to hot, cold, or sweet foods, it might suggest you have tooth decay or enamel erosion, caused by bacterial acids, which may expose sensitive dentin.



Learn more about sensitive teeth

Bad breath

If you have persistent bad breath, also known as halitosis, it can be a sign of poor oral hygiene, gum disease, or an underlying bacterial infection in the mouth.

Learn more about haliotosis

Mouth sores

Painful red or white sores or lesions, including canker sores, might arise from infections, trauma, or other health issues, affecting your ability to eat and speak comfortably. 



Learn more about mouth sores

Treatment options for oral and bacterial infections

Fillings and crowns for dental caries

Scaling and root planing for gum disease 

Antifungal medications for thrush

Antibiotics and their role in treating bacterial infections

Root canal or tooth extraction

Prevention and care strategies for managing oral infections

Preventing oral infections is vastly preferable to dealing with the consequences, and several methods can reduce the risks. 

A dentist in a blue scrubs examines a patient’s teeth during a dentist appointment. An inset image shows a smiling woman with long hair in a white coat. Dentist chair icon is visible.

Recognizing when to see a dentist

Knowing when to seek professional dental care can prevent minor issues from worsening. While regular checkups are essential for preventive care, some symptoms require urgent attention.

Oral infections and bacterial infections FAQs

Common culprits include the bacteria responsible for tooth decay and gum disease, as well as the yeast that causes oral thrush. Other bacteria include those commonly linked to staph infections and other dental issues. These organisms can lead to various oral health problems if not properly managed.

Symptoms include persistent bad breath, red or swollen gums that bleed, a constant bad taste, painful swelling or pus, and white or red patches inside the mouth.

Leaving oral infections untreated can lead to severe complications such as spread of the infection to other body parts, systemic infections, tooth loss, gum recession, and potential connections to heart disease, stroke and diabetes.

EMBRACE PREVENTATIVE DENTAL CARE

Preventing oral infections and baterial infections starts here

Adopting a thorough oral hygiene routine and keeping up with dental check-ups is crucial in preventing oral and bacterial infections and maintaining overall dental health.

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Periodontal treatment

Teeth cleanings

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The path to a healthier smile

A healthier smile is within reach with a proactive approach to oral health. By offering a wide range of dental services, with our experienced care team, Aspen Dental is dedicated to helping you achieve the best smile for you.

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