Which type of fluoride is most widely used in the U.S., particularly for children?

Sodium fluoride is the most widely used type of fluoride in the United States, especially for children. It is utilized in various forms such as toothpaste, mouth rinses, and professional applications due to its effectiveness in preventing dental caries. Sodium fluoride functions by strengthening the enamel and making teeth more resistant to acid attacks from bacteria in dental plaque.

In contrast, while acidulated phosphate fluoride (APF) is effective and commonly used in clinical settings, particularly as a topical application in professional dental cleanings, it is not as broadly utilized in everyday consumer products as sodium fluoride. Furthermore, stannous fluoride, while beneficial for remineralization and reducing gingivitis, is less commonly used due to its potential for staining teeth. Fluoride varnish, though widely applied in preventative dental care for its ease of use and effectiveness, is not as widespread as sodium fluoride for day-to-day use, particularly in children's dental products.

Therefore, considering the prevalence and diverse applications of sodium fluoride, it emerges as the most utilized type of fluoride for children's dental health in the U.S.