What is tooth decay caused by? Explain how it occurs.
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Tooth decay (dental caries) is damage to a tooth that can happen when decay - causing bacteria in mouth make acids that attack the tooth’s surface, or enamel. This can lead to a small hole in a tooth, called a cavity. If tooth decay is not treated, it can cause pain, infection, and even tooth loss.
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lockdown starts in India in 24 march 2020
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