John often eats much candy. So he gets a toothache. He has to see a dentist. He feels a little scared. He is now sitting in Dr Mai’s office. She is very nice. She looks at him and calms him. She says: “Don’t worry, John. You have two cavities. They aren’t serious. I’ll fill them. The other teeth are fine”. Then she fills the cavities in John’s teeth. He feels very happy. After that, she advises John how to protect his teeth.