Teeth sensitivity, also known as dentin hypersensitivity, refers to discomfort or pain in the teeth when exposed to certain stimuli like cold, hot, sweet, acidic foods, or even air. This sensitivity typically arises when the protective enamel on your teeth wears down, exposing the underlying dentin, which contains tiny nerve endings. Common causes of teeth sensitivity include: Worn Enamel: Over time, enamel naturally wears away, making the underlying dentin more exposed. Gum Recession: When gums pull back from the tooth, the roots become exposed, leading to sensitivity. Tooth Decay: Cavities or cracked teeth can expose the dentin. Brushing Too Hard: Using a hard-bristled toothbrush or brushing too vigorously can erode enamel. Acidic Foods and Beverages: Foods like citrus, soda, and wine can wear down enamel over time. Teeth Grinding: Bruxism can damage enamel and lead to sensitivity. Dental Procedures: Recent fillings, cleanings, or teeth whitening may temporarily increase sensitivity. Treatment options include: Desensitizing Toothpaste: Special toothpaste formulations can block the transmission of sensation to the nerve endings. Fluoride Treatments: These can help strengthen enamel and reduce sensitivity. Sealants: A dentist can apply a protective coating to exposed areas. Avoidance of Triggers: Limiting exposure to hot, cold, or acidic foods can reduce discomfort.