But Why?: Why Do Baby Teeth Fall Out?

We’re answering questions about teeth with a friendly dentist!

Theron Main, a pediatric dentist in S. Burlington, Vt answers: Why do we have (only) two sets of teeth? How and why do baby teeth get loose and fall out? Why don’t babies have teeth when they’re born? Why are teeth white? What’s the purpose of gums? How does toothpaste work? How does sugar cause cavities?

Download our learning guides: PDF | Google Slide | Transcript


But Why is a show led by you, kids!

You ask the questions and we find the answers. It’s a big interesting world out there. On But Why, we tackle topics large and small, about nature, words, even the end of the world.

Science Topics
Anatomy & Physiology, Biology, Health & Medicine
K-6, Middle School
4th Grade, 5th Grade, 6th Grade, 7th Grade, 8th Grade

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