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Invisible
germs called bacteria live in your mouth all the time. Some
of these bacteria form a sticky material called plaque on the
surface of the teeth. When you put sugar in your mouth, the
bacteria in the plaque gobble up the sweet stuff and turn it
into acids. These acids are powerful enough to dissolve the
hard enamel that covers your teeth. That's how cavities get
started. If you don't eat much sugar, the bacteria can't produce
as much of the acid that eats away enamel.
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