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Fluoridation became an official policy of the U.S. Public Health Service by 1951, and by 1960 water fluoridation had become widely used in the U.S., reaching about 50 million people. [2] By 2006, 69.2% of the U.S. population on public water systems were receiving fluoridated water, amounting to 61.5% of the total U.S. population. [3]
It comes in varying strengths, typically 23–25%; because it contains so much water, shipping can be expensive. [43] It is also known as hexafluorosilicic, hexafluosilicic, hydrofluosilicic, and silicofluoric acid. [42] Sodium fluorosilicate (Na 2 SiF 6) is the sodium salt of fluorosilicic acid. It is a powder or very fine crystal that is ...
Water fluoridation reduces cavities in children, while efficacy in adults is less clear. [9] [needs update] [10] [11] A Cochrane review estimates that when water fluoridation is used by children who have no other access to sources of fluoride, there is a reduction in cavities by 35% in baby teeth and 26% in permanent teeth. [9]
The U.S. Public Health Service’s recommendation is a fluoride concentration of 0.7 mg/L of drinking water—and there were not enough data to determine if 0.7 mg/L of fluoride exposure in ...
Water fluoridation is not mandatory, and while there is a recommended fluoride concentration in drinking water (0.7 milligrams per liter) from the CDC, that level is not an enforceable standard.
Too much fluoride can make your teeth brown, but getting a little bit is a dentist's dream. Here's the complete history of fluoridated water.
That doesn't mean the water is fluoride-free: According to the Los Angeles Department of Water and Power, the city's groundwater contains fluoride at concentrations ranging from 0.1 to 0.3 mg/L ...
Water and food sources of fluoride include community water fluoridation, seafood, tea, and gelatin. [52] Soluble fluoride salts, of which sodium fluoride is the most common, are toxic, and have resulted in both accidental and self-inflicted deaths from acute poisoning. [4]