How safe is fluoride?

Using fluoride for the prevention and control of decay is proven to be both safe and effective. Nevertheless, products containing fluoride should be stored out of the reach of young children. Too much fluoride could cause fluorosis of developing permanent teeth. Fluorosis usually is mild, with tiny white specks or streaks that often are unnoticeable. In severe cases of fluorosis, the enamel may be pitted with brown discoloration. Development of fluorosis depends on the amount, duration and timing of excessive fluoride intake. The appearance of teeth affected by fluorosis can be greatly improved by a variety of treatments in esthetic dentistry.