Stop Wincing: 3 Potential Causes of Tooth Sensitivity (And How We Can Help)
May 02, 2026
Tooth sensitivity is a widespread issue affecting around one in ten people worldwide. If you’ve ever taken a sip of iced water or a mouthful of hot soup and felt a sudden jolt in your tooth, you know how frustrating sensitivity is. That quick, sharp pain can make eating and drinking feel like a challenge instead of something you enjoy.
At Llanos Dental Group, we often see patients who try to ignore sensitive teeth and hope the problem goes away on its own. We always encourage them to pay attention to what their teeth are telling them, because sensitivity usually has a cause. Once we identify it, we can help patients find the right solution.
Here are three potential causes of tooth sensitivity and how we can help you feel more comfortable again.
Your enamel is the hard outer layer that protects your teeth. Even though it’s strong, it can wear down over time. When that happens, the softer layer underneath, called dentin, becomes more exposed. Dentin contains tiny channels that lead to the nerves inside your tooth, so heat, cold, sweets, and even air can trigger pain.
Enamel often wears down because of:
You might not notice enamel wear right away. At first, you may only feel discomfort once in a while. Later, everyday things like cold water or brushing your teeth may start to hurt.
When enamel loss causes sensitivity, we begin by examining your teeth and looking for signs of wear. We may recommend a softer toothbrush, gentler brushing habits, and toothpaste designed for sensitive teeth.
If grinding plays a role, we may also suggest a custom night guard to protect your teeth while you sleep. In some cases, we can apply treatments in the office that help reduce sensitivity and strengthen the tooth surface.
Healthy gums cover and protect the roots of your teeth. When gums recede, they pull away from the tooth, exposing the root surface. Unlike the crown of your tooth, the root doesn’t have thick enamel covering it, so it’s much more sensitive.
Gum recession can happen for several reasons, including:
If your gums have receded, you may notice that your teeth look longer than they used to. You may also feel pain near the gumline, especially when you eat or drink something cold.
We take gum recession seriously because it can affect both your comfort and long-term oral health. When you come in, we carefully check your gums for signs of inflammation, infection, or bone loss. If gum disease is the cause, we typically recommend periodontal treatment to prevent it from worsening.
We may also talk with you about improving your brushing technique, using toothpaste that helps combat sensitivity, and improving your oral care routine at home. For some patients, protecting exposed root surfaces with specialized treatments can significantly reduce sensitivity.
Sometimes tooth sensitivity points to a more specific problem, like a cavity or a crack. Tooth decay weakens the structure of your tooth and creates areas where hot, cold, or sugary foods can reach the inner layers more easily. A crack in the tooth can do the same thing. In some cases, pain comes and goes, which makes the issue easy to dismiss.
You may have tooth decay or a crack if you notice:
These problems won’t improve without treatment. In fact, they often get worse: a small cavity can turn into a larger one, and a minor crack can deepen over time, especially if you chew on that side of your mouth.
That’s why we recommend a dental exam sooner rather than later if your sensitivity feels focused on one tooth or keeps returning. Depending on what we see, we may recommend a filling, crown, or another restorative treatment to protect the tooth and relieve discomfort.
If tooth sensitivity has you wincing, don’t wait for it to get worse. Schedule a visit with Llanos Dental Group by phone or online and let us help you get back to eating, drinking, and smiling with confidence.