Clean Teeth

toothpaste is one of the ____ ways to keep our teeth clean

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before toothpaste, people had really dirty teeth.

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many people in ancient times ate lots of meat, fruits, and vegetables instead of _____ . This helped keep their teeth healthy and clean.

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the germs that cause cavities love the sugar that gets stuck to your _____

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thousands of years ago people used _____ to brush their teeth.

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tooth ______ was made up of ground rocks, ashes, and anything rough enough to scrape the teeth.

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when archaeologists studied cavemen, almost all of them had _____

• healthy teeth

• lost most of their teeth

• had no teeth