A layer of bacteria which forms on the teeth, which reacts with sugars to form plaque acid. Plaque acid attacks tooth enamel causing decay. Brushing with Fluorodyne Advanced Ultra Active, will help to reduce this process ensuring teeth remain healthy. Affects the tissues that support the teeth. Common symptoms of gum disease are sore or bleeding gums. Both Ultra Active and Oxygen White formulas contain anti-bacterial agents to lower the risk of gum disease. Various illnesses have adverse effects on the health of teeth and you should consult your dentist if you feel your teeth are suffering. Women are prone to adverse symptoms when affected by hormonal changes such as pregnancy or during their periods.