If you’ve ever wondered, “Why are my teeth sensitive?” you’re not alone. Tooth sensitivity is a common dental concern that can make everyday things like drinking coffee, eating ice cream, or enjoying something sweet surprisingly uncomfortable. Sensitivity can feel like a quick, sharp pain, and while it may disappear quickly, you should not always ignore it.

The Canadian Dental Association (CDA) notes that teeth can become sensitive to hot, cold, sweet foods and drinks, or pressure. Sensitivity may develop gradually or appear suddenly, and a dental exam can help determine whether an underlying problem is causing it.

In this post, we look into the causes of sensitive teeth, what you can do about them, and commonly asked questions about them.

What Causes Sensitive Teeth?

So, what causes sensitive teeth? There isn’t always one simple answer.

Enamel, the hard outer layer of your teeth, shields the more sensitive layers underneath. When enamel wears down, or the gums recede, the underlying dentin can become exposed. Dentin contains microscopic channels that can transmit sensations toward the nerve inside the tooth.

This can make teeth sensitive to cold and hot foods and drinks, sweets, or even pressure.

Some common causes of tooth sensitivity include:

• Enamel wear or erosion
• Gum recession
• Tooth decay or cavities
• Cracked or damaged teeth
• Worn or damaged fillings
• Gum disease
• Teeth grinding or clenching
• Brushing too aggressively
• Frequent exposure to acidic foods and beverages
• Sensitivity following certain dental treatments
• Tooth whitening products

Sometimes, sudden tooth sensitivity affects just one tooth. This may be important to have checked because a cavity, crack, worn filling, or other dental issue could be responsible.

At Midland Bay Dental, a dental examination can help identify the cause of your sensitivity rather than simply treating the discomfort.

Why Are My Teeth Sensitive to Cold?

Cold sensitivity is one of the most common dental complaints. When teeth are sensitive to cold, you might feel a sharp twinge when you sip cold water, eat ice cream, or breathe in chilly air.

Often, the cause is exposed dentin, the softer layer beneath the enamel, which can happen when enamel wears down or the gums recede. But sensitivity can also point to a cavity, a crack, or another issue.

How long the pain lasts and how intense it is can help narrow down the cause. A brief zing that fades as soon as the cold source is removed is often linked to exposed dentin. Pain that lingers or keeps getting worse is more likely to point to a deeper issue, such as a cavity, cracked tooth, or infection.

If one tooth suddenly becomes much more sensitive than the others, have it checked.

What Can You Do About Sensitive Teeth at Home?

Several simple steps may help manage sensitive teeth.

Start with your daily brushing routine. The Canadian Dental Association recommends brushing at least twice a day with a soft-bristled toothbrush and fluoride toothpaste, along with daily flossing.

Avoid scrubbing your teeth aggressively. Applying too much pressure can contribute to enamel wear and gum irritation. A soft-bristled toothbrush and gentle technique can help protect your teeth and gums.

You can also consider a toothpaste specifically formulated for sensitivity. Desensitizing toothpastes can help reduce sensitivity with regular use. The CDA Seal identifies oral care products with validated benefits, including products designed to reduce tooth sensitivity.

If you’re using a sensitivity toothpaste, consistency matters. You may need repeated use before you notice meaningful improvement.

Pay Attention to Acidic Foods and Drinks

Acidic foods and drinks can wear down enamel over time. Common culprits include soft drinks, sports drinks, citrus fruits, and wine.

You don’t necessarily need to eliminate these foods.  What matters more is how often you have them and how long they stay in contact with your teeth.

After something acidic, rinse your mouth with water and wait to brush. Acid temporarily softens enamel, so brushing right away can further wear it down. The CDA recommends waiting 20 to 30 minutes.

When Is Sensitive Teeth Treatment Needed?

Home care may help with mild sensitivity, but it doesn’t address the underlying cause when a dental problem is involved.

Sensitive teeth treatment depends on the cause, not just the symptoms. A cavity typically needs a filling, while a cracked or damaged tooth may need additional treatment to protect it.

If gum recession has exposed part of the root, your dentist can suggest ways to protect the area and reduce sensitivity. If grinding is wearing down your teeth, a night guard may help.

Sometimes sensitivity signals an infection or serious damage inside the tooth. In those cases, your dentist may recommend more extensive treatment, such as a root canal.

What About Tooth Whitening?

Whitening products can sometimes cause temporary sensitivity. If you notice sensitivity after whitening, talk with your dentist before continuing treatment.

Teeth whitening comes in several forms, and your dentist can help you decide whether it’s right for you and how to minimize sensitivity. If you already have sensitive teeth, it is especially important to address the cause before starting a whitening treatment.

When Should You See a Dentist?

Occasional, mild sensitivity doesn’t necessarily mean something is seriously wrong. However, persistent, worsening or sudden sensitivity deserves attention.

You should make an appointment if:

• Sensitivity is becoming more frequent or intense
• One tooth suddenly becomes sensitive
• Pain lingers after hot or cold foods and drinks
• You have pain when biting or chewing
• You notice a cracked, chipped or damaged tooth
• Your gums are bleeding, swollen or receding
• Sensitivity does not improve with changes to your oral care routine

The Canadian Dental Association notes that tooth sensitivity can develop suddenly or gradually, and recommends having a dentist assess the cause.

Take Tooth Sensitivity Seriously

If you’ve been asking yourself, “Why are my teeth sensitive?”, there are several possible explanations. It could be something relatively simple, such as enamel wear or gum recession, but sensitivity can also signal decay, a damaged filling, a cracked tooth, or another dental problem.

The good news is that you can often manage tooth sensitivity once you identify the cause. Good brushing and flossing habits, a soft-bristled toothbrush, fluoride toothpaste and appropriate sensitivity products can help protect your teeth.

If you’re experiencing ongoing or sudden tooth sensitivity, the team at Midland Bay Dental can assess your teeth and gums and help determine the most appropriate next step. Addressing sensitivity early can help protect your smile and keep small problems from becoming bigger ones.

Call us at (705) 526-6441 or book an appointment online. Follow us on Facebook.