Question

how tooth decay occurs for class 7​

Answer 1

Answer:

The bacteria present in our mouth can change sugary food into acids. If the acids stays in our mouth for a long time. It attack our teeth. This cause tooth decay.

Explanation:

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Answer 2

Answer:

Explanation:

Cavities are permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes. Cavities, also called tooth decay or caries, are caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks and not cleaning your teeth well.