Sensitive teeth are often caused by the exposure of the inner layer of the tooth, called dentine, due to enamel wear or gum recession. When the protective enamel layer wears down or gums recede, the tiny channels in the dentin that lead to the tooth’s nerves are exposed. This can lead to discomfort or pain when consuming hot, cold, acidic, or sweet foods and drinks. Common causes include:
Brushing too hard or using a hard-bristled toothbrush, which can wear down enamel and cause gums to recede.
Tooth grinding (bruxism), which can wear away enamel.
Acidic foods and drinks that erode enamel over time.
Gum disease, which can cause gums to pull away from teeth.
Tooth decay or cracked teeth, which may expose the dentin or inner pulp.
If you have sensitive teeth, a dental visit can help identify the underlying cause and determine the best treatment, whether it’s using desensitizing toothpaste, fluoride treatments, or other options.