Why Does Teeth Whitening Burn Your Mouth and Throat? Causes & Fix
Have you ever experienced a burning feeling in your mouth and throat due to the use of whitening agents? Although this may seem alarming, irritation in these areas while undergoing a dental whitening procedure is common and generally attributed to peroxide irritation.
In this blog post, you will find out why mouth and throat inflammation occurs during a tooth-whitening process, symptoms of a mouth irritated by whitening solutions, and how you can avoid experiencing this problem in the future.
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What Causes Burning or Throat Pain During Whitening?
Mouth or throat stinging is more common among at-home teeth whitening users, and it's often caused by improper use rather than the product itself. Excess application of whitening gel, having it applied for too long, or when it accidentally comes into contact with the gum line can cause irritation.
Some of the more common causes include:
High Concentrations of Active Ingredients
The American Dental Association explains that at-home whitening products use the same active ingredients found in professional treatments, including hydrogen peroxide and carbamide peroxide. However, higher concentrations — such as hydrogen peroxide above 6% or excessive use of 22% carbamide peroxide — may increase the risk of mouth soreness and enamel damage.
Peroxide Irritation
A scientific opinion from the European Commission notes that hydrogen peroxide-based whitening products can cause side effects such as tooth sensitivity and soft tissue tenderness. In some reported cases, this includes a burning feeling in the palate, gums, and throat. Mild gum redness may also occur after exposure to hydrogen peroxide.
Accidentally Swallowing Whitening Gel
At-home teeth whitening products are generally safe when used properly, and accidentally swallowing small amounts usually isn't a problem. The issue comes when too much is ingested or the product is used incorrectly. WebMD notes that swallowing larger amounts of hydrogen peroxide can irritate or injure the tissues in the mouth and throat. That's why it's important to follow the instructions carefully.
Your Whitening Tray Doesn't Fit Properly
Whitening trays play an important role in teeth whitening. They help keep the gel on your teeth where it belongs, reducing the chance of it spreading to your gums and other parts of your mouth. When a whitening tray doesn't fit properly, it can affect how well the gel works, lead to uneven results, and cause gum discomfort.
Curious about how whitening trays and other at-home whitening products work? Check out our guide here: At-Home Teeth Whitening: How It Works & Is It Safe? | ClearClub
Excessive Whitening
Excessive teeth whitening can weaken the enamel and make teeth more sensitive over time. As this protective layer becomes compromised, the inner parts of the tooth become more vulnerable to triggers like hot, cold, or sweet foods, making whitening treatments increasingly uncomfortable.
Signs Your Whitening Treatment is Irritating Your Mouth
You can usually tell if your throat or mouth irritation is caused by teeth whitening by looking out for the following signs:
- Burning gums
- White patches on gums
- Sore throat
- Tingling tongue
- Increased tooth sensitivity
- Dry mouth or irritation after treatment
If these symptoms continue to worsen after whitening, it may be a sign that your teeth whitening is too harsh for your mouth. In that case, it's worth knowing when to pause teeth whitening and consider more moderate options.
Not sure if you're over-whitening your teeth? Read this next: Signs You're Overwhitening Your Teeth (And What to Do Instead)
How to Prevent Burning and Sensitivity While Whitening
If you still want to go ahead with teeth whitening, here are a few ways to help reduce burning and avoid triggering tooth sensitivity:
- Use dentist-approved whitening products
- Avoid DIY whitening methods that rely on acidic ingredients
- Follow the manufacturer's instructions carefully
- Don't overfill your whitening trays
- Stop treatment if symptoms become severe
A Safer Way to Whiten Your Teeth
Click each image to view product
If you've been dealing with sensitivity in your mouth or throat during teeth whitening, it might be time to switch to a gentler approach. ClearClub's Teeth Whitening Kit offers different whitening strengths, allowing you to choose a level that matches your sensitivity and comfort. Our customized whitening trays use FDA-approved, BPA-free materials, created to help retain the gel effectively and make the entire process safe and reliable.
If this is your first time trying whitening treatment, then our Cleaning + Whitening Foam could be ideal for you. It's formulated with only 10% whitening strength, minimizing any harshness on your teeth. Both products offer a subscription option so you can stay stocked and ready whenever you need it.
Frequently Asked Questions
❓ Is it normal to feel a burning sensation when whitening your teeth at home?
Mild sensitivity is a common side effect of teeth whitening, but a soft tissue irritation in your mouth or throat could mean the product is too strong or being used incorrectly.
❓ Why does my throat or mouth hurt when using a whitening product?
A reaction during teeth whitening can happen for several reasons, including high amounts of bleaching ingredients, peroxide irritation, excessive whitening, overfilled trays, or accidentally swallowing whitening gel.
❓ How can I reduce sensitivity during teeth whitening?
To reduce sensitivity during teeth whitening, use dentist-approved products, avoid overfilling your trays, and always follow the instructions carefully. It’s also best to avoid DIY whitening ingredients and stop treatment if your symptoms get worse.
Looking for something else? Check our full FAQs section.