8. (a) Tooth enamel is one of the hardest substances in our body. How does it damage due to eating of chocolates and sweets? What should we do to prevent it? (b) What is meant by water of crystallisation in a substance? Give one example.
Answers
Answer:
Tooth enamel is made up of calcium phosphate which gets 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 in the mouth after eating. To prevent this,Tooth pastes are used,which are bases, neutralise the acid.
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Answer:
It's common knowledge that sugar is bad for your teeth, but it wasn't always so.
In fact, when the ancient Greek philosopher Aristotle first observed that sweet foods like soft figs caused tooth decay, nobody believed him.
But as science has progressed, one thing is certain — sugar causes tooth decay.
That said, sugar on its own is not the culprit. Rather, the chain of events that takes place afterward is to blame.
This article takes a detailed look at how sugar affects your teeth and how you can prevent tooth decay