A lab-created molecule kills off the bacteria that causes tooth decay.

Researchers from Yale and the University of Santiago have developed a new molecule that can kill off cavity-causing bacteria in 60 seconds. The molecule called ‘Keep 32' went through an 18-month trial before it was recently FDA-approved. The chemical can be mixed into toothpaste, mouthwash, and even food, so eating a candy or chocolate bar could become a way to actually help prevent cavities.

The down-side to Keep 32 is that because it's a form of antibiotics, the cavity-causing streptococcus mutans bacteria, could become more resistant to it. This could lead to a more aggressive and powerful strand of the bacteria.

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