Fluorides are chemical compounds that contain the element fluorine. They are commonly found in nature, particularly in water, soil, and various minerals. Fluorides are known for their ability to strengthen tooth enamel, making them important in dental care products like toothpaste and mouth rinses. In addition to dental health, fluorides are used in some drinking water supplies to help reduce the incidence of cavities. However, excessive exposure to fluorides can lead to dental fluorosis, a condition that affects the appearance of teeth. Therefore, it's essential to maintain a balanced level of fluoride for health benefits.