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Blog · March 10, 2021

Oral Yeast Infections: Common & Contagious

By Stone Falls Dental Care · Published

TL;DR

Oral thrush is an overgrowth of Candida, a fungus found naturally in the body. Signs include painful swallowing, a cotton-mouthed feeling, white lesions, bleeding when they are rubbed and cracking at the corners of the mouth. Infants, people with weak immune systems, denture wearers, diabetics and some patients in medical treatment are at higher risk. It spreads through nursing, shared toys and unwashed hands. Treatment uses antifungal medicine, and the post lists cleaning steps that help prevent another outbreak.

Oral yeast infections (or "thrush") are actually quite common, and also contagious if you're not careful. The fungus to blame for thrush, Candida, appears naturally in the body, yet excessive production can result in an oral yeast infection. Signs include:

  • Pain or difficulty swallowing food
  • A dry, cotton-mouthed feeling that may be accompanied by taste loss
  • White, milky lesions along the gums, inner lining or roof of your mouth
  • Bleeding or soreness if the lesions are brushed or rubbed
  • Cracking and/or redness by the corners of the mouth

Depending on what is causing the infection, symptoms and their severity may vary by individual. If thrush is not caught early enough, it can spread to other parts of the body.

Who Gets Thrush? Anyone can contract an oral yeast infection, but those with a higher risk for thrush are:

  • Infants, whose developing immune systems may be unable to control fungal growth
  • People with weak immune systems, either due to age or a disorder
  • People who wear dentures that are not well-fitted or kept clean
  • Diabetics, as sugar content in saliva can encourage the growth of yeast in the mouth
  • People undergoing medical treatment that may disrupt the body's natural balances

Risk factors aside, however, thrush can spread quite easily to individuals close to an infected person. A mother who cares for her infant while he or she has thrush, for instance, can easily catch the yeast infection through nursing or touching her child's mouth. While older children with healthy immune systems may not be as vulnerable to catching thrush, young infants and toddlers can fall prey to an oral yeast infection by sharing toys, food and/or handling the same objects as an infected infant.

The same holds true for transmitting thrush from adult to adult. Healthy individuals are normally at low risk, but elderly individuals can spread the condition to each other simply by coming in contact with an object that has been touched with the unwashed hands of someone who has thrush.

Prevention and Treatment Of Thrush

Thrush can persist for at least two weeks, if not more, in some extreme cases. Getting rid of the yeast infection often requires a combination of both topical and oral anti-fungal medicine, though topical medication is used for infants only. If thrush is detected and treated promptly, it is possible for symptoms to clear with a milder form of treatment that involves anti-fungal lozenges and/or a prescribed mouth rinse.

In order to prevent another outbreak, however, it's important to take several precautions to "sterilize" your home and belongings:

  • Replace your toothbrush, as well as any toothbrushes located next to it
  • Sanitize your dentures thoroughly with water, followed by a store-bought cleaner
  • Wash or boil baby bottles and pacifiers daily, and store them in the fridge before use
  • Rinse your mouth after every dose of medication, especially antibiotics and steroids
  • Staying on top of personal hygiene and being mindful of others can help avoid unnecessary recurrences and long-term effects to your dental and overall health.

To get your oral health back in shape, it is important that you schedule an exam and cleaning after you've healed.

Answers

Questions this post raises

What are the signs of oral thrush?

The post lists pain or difficulty swallowing, a dry, cotton-mouthed feeling that may come with taste loss, white milky lesions on the gums, inner lining or roof of the mouth, bleeding or soreness if those lesions are rubbed, and cracking or redness at the corners of the mouth.

Can a baby pass thrush to a nursing mother?

Yes. The post explains that a mother caring for an infant with thrush can easily catch the yeast infection through nursing or touching the child’s mouth. Young infants and toddlers can also pass it to each other by sharing toys and food or handling objects an infected child has touched.

How long does an oral yeast infection last?

The post says thrush can persist for at least two weeks, and longer in some extreme cases. Treatment often combines topical and oral antifungal medicine. When it is detected and treated promptly, symptoms may clear with a milder treatment such as antifungal lozenges or a prescribed mouth rinse.

What should I clean or replace after having thrush?

The post recommends replacing your toothbrush and any brushes stored beside it, sanitizing dentures with water and then a store-bought cleaner, and washing or boiling baby bottles and pacifiers daily. It also advises rinsing your mouth after each dose of medication, especially antibiotics and steroids.

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