Open Wide: Tooth School Inside by Laurie Keller (2003)
It's time for tooth school and Dr. Flossman is excited to meet the incoming class of 32--eight incisors, four canines, eight premolars, and twelve molars, including the four wisdom teeth. There's just so much to learn--from brushing and flossing to dentin and pulp to every student's nightmare: tooth decay! Best read with a toothbrush in hand, this hilarious book is full of interesting facts and a classroom full of quirky characters. Young readers will laugh their way to a better appreciation for those pearly whites that beckon them to brush. And from there it's just a short hop to flossing.