Teeth sensitivity occurs when the underlying layer of your teeth, called dentin, becomes exposed. This can happen due to erosion (wear and tear) and gum recession (when your gum tissue pulls away from your teeth, exposing the roots) . The roots of your teeth have thousands of tiny tubes that carry feeling (hot, cold, sweet) to a nerve center known as the pulp. Usually, the roots are covered by gum tissue. But if you have periodontal disease, that layer can pull away from teeth, exposing the ultra-sensitive root. Some of the common causes of teeth sensitivity include:

• Brushing your teeth too hard
• Clenching or grinding your teeth
• Frequently consuming highly acidic foods and drinks
• Frequently using teeth-whitening products
• Natural gum recession or gum recession related to gum disease
• New or existing tooth damage, such as a fracture, tooth decay, or a worn filling
• Deficiency in some nutrients like vitamin D

Tooth sensitivity can also be a symptom of other issues, including cavities, gum disease, or a cracked tooth. If you experience pain or sensitivity in your mouth, it is always a reason to see a dentist. They can give you recommendations for managing your sensitivity.