Is it safe that sodium fluoride is still used in toothpaste?

Fluorides....: Sodium Fluoride is the most common source of fluoride, but stannous Fluoride is also used by many companies. Stannous Fluoride has been shown to be more effective than sodium Fluoride in reducing the incidence of dental caries and controlling gingivitis.

Fluoride: Research has proven that topical Fluoride helps to make teeth more resistant to the acids that are the result of the bacteria breaking down foods, thereby reducing the number of cavities.

Reduces cavities: Topically applied fluoride, such as found in toothpaste, has several beneficial effects. It both makes the tooth enamel more resistant to acid and makes it easier for demineralization enamel to pick up minerals. It also helps to reduce the amount of acid the bacteria in the mouth make and interfers with the bacterias ability to stick to the teeth. All of this reduces tooth decay.