The Dentist from the Black Lagoon

It's Dental Heath Month, and some strange dentist is going to be poking his head into the mouths of all the students. Hubie has heard all kinds of wild things about dentists. Some say they have four hands and two heads, and that they put crazy things like bridges and crowns in people's mouths. How on earth can you fit a bridge in someone's mouth? When it's Hubie's turn to show off his choppers, he's obviously very nervous. What on earth will the dentist do to his teeth?