Fluorisis occurs when your body has been exposed to too much fluoride. When ingested normally through a safe drinking water system, fluoride is actually very beneficial and can help promote strong teeth as well as fight cavities and other dental diseases. However, if toothpastes and mouth rinses are swallowed instead of expelled, fluorosis can occur.
Fluorosis is the cause of several different aesthetic dental problems. People suffering from fluorosis generally have abnormally dark or stained teeth. Most of the problems created by fluorosis affect only the appearance of your smile, not your overall health.