Which fluoride compound is most commonly used in water fluoridation?

The most commonly used fluoride compound in water fluoridation is sodium silicofluoride. This compound is chosen for several reasons, including its effectiveness in promoting dental health by reducing the incidence of dental caries. Sodium silicofluoride is particularly advantageous because it has stable properties, making it suitable for bulk storage and transportation. In addition, it dissolves well in water, ensuring that fluoride can be effectively distributed throughout water systems to reach the community.

Sodium silicofluoride also has a low toxicity profile when used at appropriate concentrations, making it safe for public health applications. Its use in water fluoridation aligns with public health objectives to reduce tooth decay and promote oral health in a population setting. This practice is supported by extensive research demonstrating that fluoridated water is an effective preventive measure against cavities in both children and adults.

In contrast, other fluoride compounds like sodium fluoride and stannous fluoride may be used in specific dental treatments or products but are not the primary agents selected for community water fluoridation programs.