What is the recommended level of fluoride?

What is the recommended level of fluoride?

• A. 1.5 ppm
• B. 0.2 ppm
• C. 0.7 ppm
• D. 2.0 ppm

Answer: (C)

Optimal fluoride level in public drinking water is about 0.7 mg/L (ppm). This amount provides strong protection against tooth decay while minimizing the risk of dental fluorosis, especially since people today get fluoride from toothpaste and other sources as well. Historically, higher or lower ranges were used depending on climate and intake, but current guidance centers on 0.7 mg/L as the standard balance. Values higher than that offer little extra caries prevention but raise fluorosis risk, while values much lower reduce protection.

Optimal fluoride level in public drinking water is about 0.7 mg/L (ppm). This amount provides strong protection against tooth decay while minimizing the risk of dental fluorosis, especially since people today get fluoride from toothpaste and other sources as well. Historically, higher or lower ranges were used depending on climate and intake, but current guidance centers on 0.7 mg/L as the standard balance. Values higher than that offer little extra caries prevention but raise fluorosis risk, while values much lower reduce protection.