A bright smile boosts your confidence and can completely change how you feel about yourself. Whether it’s for a big event or just to feel more comfortable in your day-to-day life, teeth whitening is a popular way to get that fresh, radiant look. But if you’re wondering, “Does teeth whitening make your teeth sensitive?” you’re not alone. Many people worry about sensitivity when they decide to undergo a teeth whitening procedure.
Let’s explore if teeth whitening makes your teeth sensitive.
What is Teeth Sensitivity? 
Teeth sensitivity is a sharp, temporary discomfort or pain that you may feel when your teeth are exposed to triggers, such as hot or cold foods, sweet or acidic drinks, or even cold air. This discomfort happens when the protective enamel on your teeth wears down or your gums recede, exposing the softer dentin layer underneath. The dentin contains tiny tubules that lead directly to the nerves of your teeth, making them more sensitive to changes in temperature or pressure.
The common causes of tooth sensitivity include:
- Enamel erosion from acidic foods, drinks, or brushing too hard
- Gum recession exposes the roots of the teeth.
- Tooth decay or cavities
- Cracked or chipped teeth
- Teeth grinding (bruxism) that wears down enamel
- Recent dental treatments like fillings, crowns, or whitening procedures
How Does Teeth Whitening Work?
A teeth whitening procedure removes stains and discoloration from the surface of your teeth. The process includes the use of whitening agents, such as hydrogen peroxide or carbamide peroxide, to break down stains into smaller particles, making your teeth appear whiter and more vibrant.
There are several methods of teeth whitening:
In-office professional whitening:
It is performed by a dentist. This method uses a higher concentration of whitening agents and often includes the use of light or laser to accelerate the process. The results of this method are quick and dramatic.
At-home whitening kits:
These kits are either prescribed by a dentist or bought over the counter. They include customized or pre-made trays filled with a whitening gel that is worn for a certain period each day.
Whitening toothpaste and strips:
These over-the-counter products contain lower concentrations of peroxide and can be used daily to whiten your teeth.
Why Does Teeth Whitening Make Your Teeth Sensitive?
Teeth whitening causes sensitivity because whitening agents such as hydrogen peroxide or carbamide peroxide penetrate into the tooth enamel to break down stains. While this is effective for whitening, it can temporarily affect the deeper layers of the teeth, including the dentin, where the nerves are located. When the dentin is exposed or irritated, it causes sensitivity.
Here are the reasons why teeth whitening makes your teeth sensitive:
- Enamel thinning: The whitening agents make the enamel weak and cause teeth sensitivity.
- Dentin exposure: Whitening treatments can expose the tiny tubules in the dentin, which are connected to the tooth’s nerves. This exposure causes the discomfort associated with sensitivity.
- Dehydration of teeth: When teeth lose moisture during whitening, they become more sensitive. This dehydration occurs during in-office treatments, where the whitening solution is more concentrated, but it is temporary.
The good news is that sensitivity caused by teeth whitening is short-lived and resolves within a few days after the treatment.
Is Teeth Sensitivity Permanent After Whitening?
Teeth sensitivity isn’t permanent after whitening; it only lasts for a few days to a week, depending on the individual and the whitening method used. Most people feel that the sensitivity decreases as the enamel recovers and moisture levels in the teeth return back to normal.
However, certain factors can prolong or reduce sensitivity, such as the concentration of the whitening agent, how often you whiten your teeth, and whether you already have sensitive teeth or thinning enamel.
Who is Most Likely to Experience Sensitivity?
People with pre-existing tooth sensitivity are more likely to experience discomfort after teeth whitening. If you already have thin enamel, exposed roots, or gum recession, you may be more vulnerable to sensitivity since your teeth are less protected. Other risk factors include a history of teeth grinding (bruxism), cavities, or dental treatments like fillings and crowns, which can expose sensitive areas of the teeth.
Age also plays a role in sensitivity. As we age, enamel naturally wears down, increasing the likelihood of sensitivity after whitening. Additionally, those with poor oral health or untreated dental issues may face higher risks of discomfort during and after whitening treatments.
How to Reduce Sensitivity During and After Teeth Whitening?
- Use desensitizing toothpaste or gels to help calm your teeth and reduce sensitivity.
- Professional whitening causes less sensitivity than store-bought products.
- Start using fluoride treatments to strengthen your teeth and reduce sensitivity.
- Don’t consume hot or cold foods and drinks for a few days to prevent discomfort.
- Continue brushing with fluoride toothpaste and floss regularly.
- Brush with a soft-bristled toothbrush to avoid further enamel wear and reduce sensitivity.
- Drink plenty of water to keep your teeth hydrated and reduce the effects of sensitivity.
Does Teeth Whitening Make Your Teeth Sensitive?
Some people experience temporary sensitivity after teeth whitening, but this discomfort is usually short-lived and manageable with proper care. Understanding how whitening works and taking steps to protect your teeth can help reduce sensitivity and improve your whitening experience.
If you’re concerned about sensitivity or want to explore your options, consult with our dentist at Prograce Dentistry in NW Calgary. Book your consultation today. New patients can reach us at 587-418-8462, while all other callers can contact us at 403-288-8080. Let us help you achieve a brighter smile with expert care.
FAQs
Does teeth whitening always cause sensitivity?
Not everyone experiences sensitivity because it can vary based on the whitening method and individual tooth health.
When should I see a dentist if I experience sensitivity?
If sensitivity continues for more than a week or becomes severe, consult your dentist immediately.
Is professional whitening less likely to cause sensitivity than over-the-counter products?
Professional whitening is less likely to cause sensitivity because it’s tailored to your needs and monitored by a dentist, which makes it gentler than some over-the-counter products.
