What is tooth enamel chemically ? State the condition when it starts c

1.	What is tooth enamel chemically ? State the condition when it starts corroding.
Answer» Tooth Enamel is the hardest part of our body. It is composed of 96 % Inorganic material and 4 % Organic material. The Inorganic material present is Crystalline calcium Phosphate .White tooth enamel is calcium phosphate though a very hard substance, which gets affected when the pH of our mouth falls below 5.5.It happens because the bacteria present in our mouth break down sugar and food particles into acids which damage our teeth by corroding them. To prevent the tooth decay, after eating one should clean mouth thoroughly with tooth powder or toothpaste, which is basic in nature. It neutralises the excess of acid.

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