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Tooth enamel is the hardest substance in the body. It does not dissolve in water but is corroded when the pH in the mouth is below 5.5. It is made up of :
  • a)
    Calcium phosphate
  • b)
    Calcium Oxide
  • c)
    Potassium Hydroxide
  • d)
    Potassium Chloride
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Tooth enamel is the hardest substance in the body. It does not dissolv...
  • pH change as the cause of tooth decay Tooth decay starts when the pH of the mouth is lower than 5.5.
  • Tooth enamel, made up of calcium hydroxyapatite (a crystalline form of calcium phosphate) is the hardest substance in the body. Hence, option (a) is the correct answer.
  • It does not dissolve in water but is corroded when the pH in the mouth is below 5.5.
  • Bacteria present in the mouth produce acids by degradation of sugar and food particles remaining in the mouth after eating.
  • The best way to prevent this is to clean the mouth after eating food.
  • Using toothpaste, which is generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay.
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Tooth enamel is the hardest substance in the body. It does not dissolve in water but is corroded when the pH in the mouth is below 5.5. It is made up of :a)Calcium phosphateb)Calcium Oxidec)Potassium Hydroxided)Potassium ChlorideCorrect answer is option 'A'. Can you explain this answer?
Question Description
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