The dentine beneath teeth becomes visible as the gums recede or the tooth's enamel wears off. Tooth sensitivity is the term for the brief, acute pain that can occur when hot, cold, sweet, or sour food or liquids come into touch with exposed dentine. Sensodyne Fresh Gel is a daily fluoride toothpaste that offers the advantages of a conventional paste, such as strong teeth and healthy gums, while also helping to prevent tooth sensitivity. It also tastes crisp and delicious, leaving your tongue feeling clean and fresh. You may enjoy your favorite meals and beverages without worrying about sensitive teeth if you brush twice a day. Prior to use, always read the directions and guidelines on the pack.