Sensitive teeth can occur when the tooth enamel erodes or the gumline recedes from teeth leaving exposed tooth surfaces. The result is unprotected nerves which are the source of sensitive teeth pain. With regular use, Mentadent Sensitive Plus can build increasing protection against sensitivity, helping prevent sensitive tooth pain. Baking soda & peroxide are kept separate and fresh. The ingredients combine to create active and powerful oxygen bubbles. Bubbling action formula helps leave your whole mouth feeling clean. Sensitive Plus Formula: Delivers a clinically proven desensitizing ingredient directly to the teeth, even along the gumline, for soothing sensitivity pain relief; Builds increasing protection against painful sensitivity of the teeth; Contains fluoride to help prevent cavities; Cleans and refreshes your mouth; Has a fresh, clean taste.