Final answer:
Children may be at risk for dental fluorosis in areas with naturally high levels of fluoride in their drinking water. Excess fluoride can cause dental fluorosis which can lead to discoloration and pitting of the teeth.
Step-by-step explanation:
Children may be at risk for dental fluorosis in areas that have naturally high levels of fluoride in their drinking water. Fluoride occurs naturally in water, and some groundwater and natural springs can have high levels of fluoride. Excess fluoride can cause dental fluorosis, which can lead to discoloration and pitting of the teeth.