Bubblegum That Cleans Your Teeth--For Kids Where There Are No Dentists

For kids in developing world slums, dental hygiene is a real problem. With this cheap gum developed by a team of college students, they might be able to have their candy and clean teeth.

Up to 3.9 billion people--or roughly half the global population--suffer from untreated tooth decay. They don't visit a dentist regularly (except to get a tooth extracted). They're prone to aches and related sleep problems. Their brushing-and-flossing routine is minimal, or non-existent.

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