What Causes Canker Sores In Children And How To Treat Them

From the desk of
Dr. Alexandra Otto
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What Are Canker Sores?

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Also known as "aphthous ulcers," canker sores are among the most frequently occurring types of mouth sores. They can occur in children and adults of all ages. Canker sores can appear on the lips, gums, tongue, roof of the mouth, under the tongue, and inside the cheeks.

What sets canker sores apart from other mouth sores is their distinctive yellowish or whitish center, surrounded by a red, inflamed rim. Canker sores are typically quite small, with most measuring less than one millimeter in diameter. However, in some cases, they can be larger.

Interestingly, there are two categories of canker sores: "simple" and "complex." Simple canker sores are the most prevalent. They may occur 3-4 times a year, last approximately a week, and predominantly affect individuals between the ages of 10-20 years. These are the canker sores most children experience.

On the other hand, complex canker sores are less common. However, they are larger, more persistent, and more painful. In fact, they can be so painful that they interfere with eating and drinking. Complex canker sores may persist for up to a month and may even leave a scar after they heal.

The silver lining is that complex canker sores are seldom seen in healthy children, as they typically arise due to underlying autoimmune conditions, nutritional deficiencies, and other intricate health issues.

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What Causes Canker Sores?

The truth is, we're still in the dark. Medical and dental professionals have yet to pinpoint the exact reason why canker sores occur, or why they're more prevalent in some individuals than others. The specific process of canker sore formation remains a mystery.

Nevertheless, we have identified some triggers and contributing factors that seem to play a part in the emergence of canker sores. For simple canker sores, these factors include:

  • Stress
  • Oral injuries, such as mouth cuts
  • Eating highly acidic foods like lemons, limes, and other citrus fruits
  • Regular usage of NSAIDs (nonsteroidal anti-inflammatory drugs) like naproxen and ibuprofen
  • Wearing certain dental appliances, like braces

Complex canker sores, on the other hand, are believed to be sparked by other medical conditions, such as allergies or nutritional deficiencies like iron, B-12, zinc, or folic acid. Autoimmune diseases like lupus, Crohn’s disease, and celiac disease are also suspected to contribute to the development of complex canker sores.

While canker sores can affect individuals of all ages, they're most common among teenagers and those in their early 20s. Interestingly, canker sores are also more prevalent in women than men. While the exact reason remains unknown, it's speculated that this could be due to hormonal changes in women.

How Long Does It Take For Canker Sores To Go Away?

Typically, simple canker sores will disappear on their own within two weeks, even without any specific treatment. Plus, after the initial few days, any pain or discomfort will significantly improve. As the canker sores begin to heal, they will cause your child much less discomfort. 

How Can I Treat My Child’s Canker Sores?

In most scenarios, your primary aim should be to alleviate your child's discomfort and pain. There's little you can do to expedite the healing of the canker sore, so your efforts should be centered on managing your child's symptoms.

For instance, you can apply an over-the-counter topical anesthetic such as Orajel to numb the affected area. However, if your child is under two years of age, you should refrain from using Orajel or any other numbing product that contains benzocaine, as it could lead to a rare yet serious blood condition known as methemoglobinemia.

Another popular home remedy for canker sores involves rinsing with salt water. Simply mix one teaspoon of salt into a half-cup of warm water, then instruct your child to swish the salt water around their mouth for 15-30 seconds. This might cause a slight discomfort, but it aids in drying out the sore and preventing additional swelling.

If your child's canker sore is unusually large, painful, or persistent, it might be advisable to seek further treatment from your pediatric dentist or your child's pediatrician. Depending on the severity of your child's canker sore, they may recommend an antibiotic mouth rinse, antibiotic medication, or a corticosteroid-containing ointment. These products can help alleviate pain and discomfort and expedite your child's recovery.‍

When Should I See My Child See A Doctor About Their Canker Sore?

By and large, canker sores are not a cause for alarm, and will naturally heal over time. However, there are certain instances when you may need to consider seeking professional medical help for your child's canker sore problem.

If your child's canker sores appear unusually large, persist for more than two weeks, or cause such severe pain that it disrupts their ability to eat, drink, or perform everyday activities, it's time to consult a specialist. If your child is running a high fever or if the canker sores seem to be spreading, you should also seek medical attention.

For expert advice and treatment, don't hesitate to reach out to Kids Tooth Team led by Dr. Kasey Stark in Lake Orion, Michigan. Call us today at (248) 422-0555. 

Can Canker Sores Be Prevented?

While we can't pinpoint the exact causes of canker sores, we've found that certain measures can assist in their prevention. One of the most effective ways is maintaining excellent oral hygiene. Your child should brush their teeth for two minutes, twice daily, using a fluoride toothpaste and a soft-bristled toothbrush.

If your child is prone to frequent canker sores, it might be beneficial to limit their consumption of salty, acidic, and spicy foods and beverages. This could potentially deter the development of canker sores. It could also be worth discussing your child's nutritional intake with their doctor, as nutritional deficiencies can often play a role in the onset of canker sores.

Worried About Canker Sores In Lake Orion? Get Help From Kids Tooth Team!

At Kids Tooth Team, we are your go-to experts for pediatric dentistry in Lake Orion and South Michigan. If your child's canker sores are causing concern, we have the solution to ease their pain and discomfort, ensuring a swift recovery and return to their daily activities. Don't hesitate. Schedule a consultation online or give us a call to get the immediate assistance your little one needs from Dr. Kasey Stark. We're conveniently located in three offices in Lake Orion, MI.

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