A team of engineers, dentists, and biologists from the University of Pennsylvania developed a microscopic robotic cleaning crew. This microscopic robotic army will wipe out dental plaque (sticky yellow film that builds up on your teeth).

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A team of engineers, dentists, and biologists from the University of Pennsylvania developed a microscopic robotic cleaning crew. This microscopic robotic army will wipe out dental plaque (sticky yellow film that builds up on your teeth).