At the center of every tooth is a soft nerve center called the pulp. The outside layer is the enamel. Enamel is a hard mineralized material that protects the softer layers below. But even with all this protection, your teeth are in constant danger of rotting, also known as tooth decay. Teeth rot because of the presence of bacteria in your mouth.
Bacteria are tiny living organisms that are found everywhere.
They come in many shapes and sizes. Some are helpful and make our lives better but some are harmful and can cause disease. There are millions of bacteria in your mouth right now. They are living on and eating little bits of food that is stuck between your teeth. When a bunch of bacteria starts growing together on your teeth, it's called plaque.