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  • Smart Learning for All

  • Why is fluoride added to water?

  • To make water taste like soft drink.

  • No.

  • According to a prevailing study.

  • When fluoride is added to public water supplies.

  • At an average concentration of about 1 part per million or slightly below, it prevents tooth decay.

  • But how?

  • Enamel is the hard outer covering of our tooth.

  • It is primarily made up of hydroxyapatite.

  • Hydroxyapatite is a compound of calcium, phosphorus and hydroxide.

  • Now, when bacteria in our mouth feed on food particles, they produce acid.

  • This acid dissolves the hydroxyapatite leaving behind a residue of calcium and phosphate ions.

  • This results in a tooth decay.

  • Now, when we drink water containing fluoride.

  • The fluoride binds with calcium and phosphate ions forming fluorapatite.

  • As fluorapatite is less susceptible to acid attacks, it helps to stop the tooth decay process.

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Smart Learning for All

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