Tooth decay is the softening of your tooth enamel caused by acids. These acids are created when plaque bacteria break down sugar in your mouth.
What Is a Cavity?
It’s actually pretty simple. Decay (or softening of enamel) happens over time and the result is a cavity—a defect left in the tooth. Teeth are covered with a hard, protective top layer called enamel. But once the enamel is weakened by acids produced by bacteria, a pit or cavity is formed in or on the tooth surface.
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