You’re enjoying your morning coffee, and suddenly: zing. A sharp, quick pain shoots through one of your teeth. Or maybe it happens when you bite into something cold, like ice cream or a crisp apple. Your first thought is probably: “Do I have a cavity?”
It’s a fair question. But that zing might not be a cavity at all. It could be something much simpler (and easier to fix). Knowing the difference between a cavity and tooth sensitivity can save you a lot of unnecessary worry. At TotallySmiles, we help patients figure this out all the time. Dr. Steven and Dr. Corey have been diagnosing these kinds of tooth quirks for decades. Here’s what we’ve learned.
What Tooth Sensitivity Feels Like
Sensitivity is usually quick and sharp. It hits you when your tooth encounters something hot, cold, sweet, or even just a blast of cold air. But the pain goes away almost as fast as it comes. That’s sensitivity’s signature move. It’s a flash, not a lingering ache.
Sensitivity happens when the protective enamel on your tooth gets thinner, or when your gums recede and expose the roots. Those roots aren’t covered by hard enamel; they’re more porous, and they let temperature changes travel straight to the nerve inside your tooth.
Common causes include:
- Brushing too hard (which wears down enamel)
- Using a hard-bristled toothbrush
- Grinding your teeth at night
- Acidic foods and drinks that erode enamel
- Gum recession from aging or gum disease
Sensitivity can often be managed with a desensitizing toothpaste, a softer toothbrush, or a quick in-office treatment.
What a Cavity Feels Like
A cavity is different. Cavity pain tends to be duller and more persistent. It might linger after you eat or drink something hot or cold. Sometimes it hurts when you bite down on a particular tooth. And as the cavity gets deeper, the pain can start showing up even when you’re not eating anything.
That’s the big difference. Sensitivity is a flash that fades. A cavity is more of a nagging presence.
Cavities happen when bacteria in your mouth produce acid that eats through your enamel and creates a hole. If that hole reaches the inner layer of your tooth (the dentin) or the nerve, you’ll feel it.
Other Clues to Watch For
Here are a few more ways to tell them apart:
- Flossing: If you floss and it catches or shreds on a spot, that could be a cavity or a chipped tooth.
- Visible spots: Cavities can show up as dark spots or visible holes. Sensitivity doesn’t change how your tooth looks.
- Duration: Sensitivity fades in seconds. Cavity pain might linger for minutes, or even longer.
- Triggers: Sensitivity usually responds to temperature or sweets. A cavity might hurt whenever you bite down, even on soft food.
What We Can Do
If you’re not sure which one you have, the best move is to let your dentist in Gaithersburg take a look. We can’t tell you over the phone, but we can tell you in person, quickly and painlessly.
We’ll start by asking you about your symptoms. Then we’ll do a visual exam and probably take a digital X-ray. That X-ray can show us what’s happening below the surface, including cavities between teeth that aren’t visible to the naked eye.
If you’ve got a cavity, we’ll catch it early and treat it with a simple filling. If you’ve got sensitivity, we’ll talk about the cause and help you find a solution, whether that’s a different toothpaste, adjusting your brushing technique, or treating the underlying issue like gum recession or grinding.
When to Call Us
If the pain is sharp and gone in seconds, it’s probably sensitivity. If it lingers, hurts when you bite, or keeps you up at night, it’s more likely a cavity. But either way, you don’t have to wonder. That’s what we’re here for.
If you’re dealing with tooth pain and aren’t sure what it means, call us at 301-701-5861 or request an appointment online. We’ll work through it together and make a plan that works for you. We’re here to take the guesswork out of your smile.