A common cause is dental fluorosis. This is typically the result of increased fluoride consumption in childhood. It is usually a harmless condition that only tends to develop before the teeth ...

Objectives To determine the prevalence and severity of fluorosis in permanent incisor teeth in young children ... of subjects starting to brush before and after one year of age.

Do You Need Fluoride Treatment After a Teeth Cleaning ... The only real side effect is an uncommon one called fluorosis, a cosmetic discoloration of the teeth if someone gets a little too much ...