Question

9. Tooth decay is caused due to ​

Answer 1

Answer:

Tooth decay (dental caries) is damage to a tooth that can happen when decay-causing bacteria in your mouth make acids that attack the tooth's surface, or enamel. This can lead to a small hole in a tooth, called a cavity.

Answer 2

Answer:

Cavities,germs in unclean teeth.

Explanation:

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