The Berenstain Bears Visit the Dentist by Stan and Jan Berenstain
The Berenstain Bears take good care of their teeth and visit the dentist regularly. In this story, Brother Bear goes for a dental check up and gets a cavity filled, and Sister has a loose tooth pulled out painlessly.
This book teaches good oral hygiene through example; told with humor and a light touch, the story helps alleviate kids' fears of going to the dentist.