Why Do We Have Baby Teeth?

Have you ever lost a tooth? Or maybe you have teeth that are getting a little wiggly? It's all part of growing up! Join Jessi and Squeaks to learn why we lose our baby teeth and how we can take care of our new permanent teeth! Say "cheese!"
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SOURCES:
http://www.merckmanuals.com/professional/pediatrics/growth-and-development/physical-growth-of-infants-and-children

http://www.webmd.com/oral-health/guide/dental-health-your-childs-teeth

http://animaldiversity.org/collections/mammal_anatomy/tooth_replacement/

http://www.uic.edu/classes/orla/orla312/DeciduousDent.htm

Видео Why Do We Have Baby Teeth? канала SciShow Kids