Campaigners against fluoridation claim that an overdose of fluoride can cause ‘brittle bone’ disease and digestive disorders. However, these suggestions have not been scientifically proven. Dental Fluorosis can occur when too much fluoride is taken. For example, if the water supply is already fluoridated and supplements are taken, dental fluorosis can result. It can also occur when children swallow toothpaste.
Fluorisis is caused when too much fluoride is absorbed while the enamel of the teeth is forming. In its mildest form, fluorosis appears as fine, pearly-white lines or flecking on the surface of the teeth, often discernible only to a dental expert. While severe fluorosis can lead to pitting of the enamel and discolouration, this is rare in this part of the world.