Tooth sensitivity often increases when protective enamel wears down or gums recede, exposing the sensitive underlying dentin and tooth roots. This is commonly caused by aggressive brushing, teeth grinding, or consuming acidic foods. It is a very common and manageable issue.\n\nTo treat this, use a desensitizing toothpaste containing potassium nitrate or arginine, which helps block pain signals to the tooth nerve. Additionally, brushing gently with a soft-bristled toothbrush and using a fluoride mouthwash can help rebuild enamel strength. If the sensitivity persists, it is best to visit a dentist for a routine checkup.