Question

Compound Q forms enamel of teeth. It is the hardest substance in the body. It does not dissolve
in water but it is corroded when pH in the mouth is below 5.5. Identify Q and state whether it is
acidic or basic in nature? How does tooth paste prevent dental decay? Brushing our teeth twice a
day is a well-known saying. Justify this statement

Answer 1

Q is enamel .when teeth are not cleaned regularly they be come covered with a sticky yellowish layer of food particles and bacterial cells known as dental plaque . brushing your teeth twice a day after eating food removes the the plaque before the bacteria produces acid , this prevents dental caries or tooth decay or toothache

Answer 2

Answer:

Q = Ca3 (PO4)2. Bacteria present in the mouth produce acids by degradation of

sugar and food particles remaining in the mouth after eating. Using toothpastes, which

are generally basic, for cleaning the teeth can neutralize the excess acid and prevent

tooth decay.

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