Mercer Mayer's very popular Little Critter is on his way to the dentist. It's a thorough check-up, complete with dental x-rays. When Dr. Ghum insists on filling a cavity, Little Critter goes through it bravely. The visit is painless to the reader because of Little Critter's funny, honest way of look at things -- including the world of dentistry. 

Card catalog description
Little Critter goes to the dentist for a checkup, and finds that going to the dentist isn't so bad.