Fluoride is a mineral that occurs naturally in all water sources, including oceans. Research shows that fluoride can prevent cavities in children and adults by making teeth more resistant to acid that attacks and causes cavities.
There are two ways teeth can be exposed to fluoride:
1) Systemic –swallowing fluoride, which is the most common source from drinking water
2) Topical Fluoride –directly applied to the teeth as toothpaste or rinses. Professional applications are available in gel or varnish forms from your dentist.