Getting braces usually comes with a few common questions—especially about what kind of discomfort to expect. One thing we hear often at Kelly Smile Dentistry is whether braces can lead to canker sores. While this orthodontic treatment don’t directly cause them, they can sometimes irritate the soft parts of your mouth enough to trigger a sore.

Braces work by gradually guiding your teeth into the right position using brackets and wires. While this process is highly effective, it can sometimes lead to irritation inside the mouth, particularly in the early stages or after an adjustment. That irritation may result in small, painful sores, especially in areas where the braces rub against the cheeks, lips, or tongue.

In this post, we’ll explore what canker sores are, how braces can cause them, and what you can do to manage the sores.

What Are Canker Sores?

Canker sores are small ulcers that appear inside the mouth. You might notice them on the inside of your cheeks, along your gums, under your tongue, or even on the soft palate. They often start as a small bump or white or yellow spot with a red border and can be quite painful, especially when you eat or brush.

Unlike cold sores, canker sores are not contagious. They’re typically caused by irritation, minor injuries, stress, or certain foods, and they tend to come and go on their own.

How Long Do Canker Sores Last?

Most canker sores heal within one to two weeks without any special treatment. The discomfort usually peaks in the first few days, then gradually improves. If a sore lasts longer or becomes more painful over time, let your dentist know so they can take a closer look.

Can Braces Cause Canker Sores?

Yes, braces can sometimes lead to canker sores, but not directly. The friction from brackets or wires rubbing against the inside of your mouth may cause irritation. For some people, that irritation can trigger a sore, especially in areas already sensitive from daily eating, speaking, or brushing.

It’s important to know that not everyone gets canker sores during their orthodontic treatment. Some patients go through their entire treatment without them, while others may notice them occasionally, especially after a tightening or when first getting braces.

How to Prevent Canker Sores with Braces

While you can’t always prevent canker sores completely, you can reduce your chances by keeping your mouth as comfortable and healthy as possible:

Use orthodontic wax to cover brackets or wires that are irritating soft areas inside your mouth. This creates a smooth surface and minimizes friction.

Brush and floss carefully to keep your mouth clean and reduce bacteria that could aggravate a sore.

Avoid spicy, acidic, or crunchy foods that can irritate soft tissue or worsen a sore that’s already started.

Stay hydrated to keep your mouth from drying out, which can lead to more irritation.

Manage stress, which is a known trigger for canker sores in some people.

How to Treat Canker Sores at Home

If you do get a canker sore while wearing braces, there are a few simple ways to help it heal and feel more comfortable:

Rinse your mouth with warm salt water a few times a day to soothe the sore and keep the area clean.

Stick to soft, bland foods like yogurt, applesauce, or soup while the sore is healing.

Avoid spicy or acidic foods, which can make the pain worse or delay healing.

Be gentle when brushing near the sore to avoid further irritation.

If the pain is more intense, your dentist may recommend a mild oral gel or rinse to provide temporary relief.

Kelly Smile Dentistry Is Here to Help

Canker sores from braces are a common part of the adjustment process, and in most cases, they heal quickly with a little care. At Kelly Smile Dentistry, we’re here to help you stay comfortable throughout your orthodontic journey. Whether you’re managing a sore spot or just have questions about your treatment, our team is ready to support you every step of the way.

If you’re concerned about discomfort from your braces or need help managing a canker sore, contact us at 760-242-2338 to book your appointment. Dentist Dr. Kelly Hong will make sure your smile experience is as smooth as possible.