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Toothpaste is used to clean our teeth . In the basic word's teeth has an acid called as lactic acid. The tooth enamel is attacked by the acid and causes tooth decay. Toothpastes contain alkaline substances that helps to neutralize and remove the acid in the mouth. Saliva in our mouth also plays a similar role. The enzyme Ptyalin that is found in the saliva is slightly alkaline and can help to remove the acid particularly after a meal.

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14y ago
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14y ago

It contains fluoride, which prevents disease in your gums, and it is also slightly abrasive, so it helps scrub your teeth, just like your brush. It's somewhat antibacterial as well.

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Q: Why is toothpaste used?
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