The pediatric dentist knows how to use a special language to explain in a simple and understandable way what happens when a tooth gets decayed. One idea is: “you probably forgot to brush your teeth one evening and sugar from the food you ate got stuck on your tooth. A small bug came in your tooth while you were sleeping, a bug so small your eyes can’t see and is called bacteria. It ate the sugar that you did not brush away, it became very strong and got into your tooth to make a dark cavity to nest inside “.