Getting a cavity will likely happen at some point in everyone’s life. Cavities are tiny holes or openings that form on a decayed area of your tooth. They occur when bacteria builds up on your teeth and turns into plaque. The acids in plaque de-mineralize your enamel, which is made up of calcium and phosphate, thus causing the tooth to decay and form a cavity. There are three main types of cavities: those that occur on the smooth side of your teeth, fissure/pit cavities that form on the chewing surface, and root cavities that form on the roots. What can you do for cavity prevention?