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Book 2, Question 77

Why Do We Lose Baby Teeth?

Baby teeth are small, but your jaw grows bigger as you grow, and bigger adult teeth need room. A bigger tooth grows underneath and pushes the baby tooth out. Most kids lose about 20 baby teeth!

From the book

Illustrated page from A Million Whys Book 2 titled Why Do We Lose Baby Teeth, with Crafty Clover.

Page from A Million Whys Book 2

More fun facts

Sources: KidsHealth (Nemours), Cleveland Clinic, Cleveland Clinic

Questions kids ask

When do kids start losing baby teeth?

Most kids start around age 6, but some start a little earlier or later.