What causes cavities?

Plaque is a clear bacteria laden film, which develops on the teeth. The bacteria in plaque interact with the starches and sugars we eat and form an acid, which breaks down or de-mineralizes our teeth. Plaque and sugar interact with one another to form an acid, which breaks down the enamel of the teeth, resulting in a cavity. Proper removal of plaque will also greatly reduce the risk of getting cavities.