Why does the tooth decay occur? What is the role of toothpaste in preventing cavities?

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Solution

Food and bacteria can cause tooth decay. Plaque is always forming inside our mouth. This sticky substance is getting on your gums and your teeth, and it contains the bacteria that feast on the sugars from the food we eat. When bacteria feed, they make acid.
Toothpaste is basic in nature. When bacteria acts on our teeth which is acidic so toothpaste will neutralize it.

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