dental hygiene

What Causes Sensitive Teeth?

3 min read

You take a sip of cold water and your tooth just complains. Not quite pain, but sharp enough to stop you mid sip. If that keeps happening, you’re probably dealing with tooth sensitivity, and there’s usually a reason for it.

It starts when enamel gets thinner, or when your gum pulls back from the tooth. Underneath enamel is dentin, and dentin’s got these tiny channels running toward the nerve. Cold drinks or hot food can set those channels off, which is where that quick zing comes from.

Enamel Wear Is a Common Culprit

Enamel doesn’t grow back once it’s worn down. So if you’re brushing hard because you figure harder equals cleaner, that’s worth rethinking. That habit wears the surface down over time, slowly enough that you might not even notice until it’s a problem.

Acid’s another factor. Fizzy drinks, acidic food eaten often, all of that softens enamel temporarily. Brushing right after isn’t great either, since the surface is already a bit softer than usual right then.

Gums Can Expose Sensitive Areas

Gum recession is another big one. As gum tissue pulls away from the tooth, part of the root can end up exposed, and root surfaces don’t have that same thick enamel coating the visible part of your tooth does.

That exposed spot reacts fast to temperature. You might notice it with iced water, ice cream, even just breathing in cold air on a winter morning.

Gum Disease Matters Too

Swollen or bleeding gums aren’t something to just shrug off. Gum disease can cause tissue to pull back from teeth, exposing sensitive areas in the process. If sensitivity’s showing up alongside bleeding or sore gums, that’s worth getting checked rather than waiting it out.

Other Things That Can Trigger Sensitivity

Sometimes it’s really specific to one tooth. A cavity can make a single tooth sensitive since decay’s getting closer to the nerve. A crack can cause something similar, especially when you bite down on it.

Recent dental work can leave teeth sensitive for a while too, whitening being the classic example. It usually settles on its own, but severe pain shouldn’t just be tolerated.

When Should You See a Dentist?

If it’s a one off thing after a really cold drink, probably nothing to worry about. But if one tooth keeps reacting, the pain’s getting worse, or it lingers well after the food or drink is gone, that’s worth booking a checkup for.

Disclaimer

The information shared in our articles is intended for educational and informational purposes only and should not be considered a substitute for professional dental advice, diagnosis, or treatment.

Every smile is unique, and only a qualified dental professional can assess your individual oral health needs. If you have any concerns, please book an appointment with our team or consult your local dentist.

Read our Full Disclaimer.
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