Question

Compound P forms the enamel of teeth. It is the hardest substance of the body. It doesn’t dissolve in water but gets corroded when the pH is lowered below 5.5.
(i) Identify the compound P.
(ii) How does it undergo damage due to eating chocolate and sweets? What should we do to prevent tooth decay?

Answer 1

(i) Calcium Phosphate Ca₃(PO₄)₂
(ii) Bacteria present in the mouth produce acids by degradation of sugar and food particles left after eating chocolate and sweets. This causes damage to the teeth. Cleaning the mouth using a toothpaste, which is basic in nature, can prevent tooth decay.