Fluoride is a mineral that occurs naturally in many foods and in water. If drinking water does not have fluoride, supplements are available.
The lack of exposure to fluoride places individuals of any age at risk for dental decay. Fluoride is important to dental health because it helps prevent tooth decay by making your tooth enamel more resistant to acid attacks from plaque bacteria in your mouth.
Pediatric dentist will do regular fluoride to your children as regular measure if you take your children for regular visits.
In case of excess exposure to fluoride during developmental stages, then there will be discoloration of teeth from yellow to brown based on severity of exposure.
Required level of fluoride ppm in water is 1ppm. Less or more level will cause damage to teeth.