![Science Trek](https://image.pbs.org/contentchannels/uR88rxa-white-logo-41-zGZrjQE.png?format=webp&resize=200x)
D4K: The Web Show: Teeth
Clip: Special | 7m 55s
When should you brush your teeth?
In this D4K Web show, host Joan Cartan-Hansen and her guest scientists, Dr. Steven Bruce and Dr. Dusty Weitz, answer students’ questions about why we sometimes lose teeth, why permanent teeth don’t grow back and how often you should brush and floss.
Science Trek is a local public television program presented by IdahoPTV
Laura Moore Cunningham Foundation
![Science Trek](https://image.pbs.org/contentchannels/uR88rxa-white-logo-41-zGZrjQE.png?format=webp&resize=200x)
D4K: The Web Show: Teeth
Clip: Special | 7m 55s
In this D4K Web show, host Joan Cartan-Hansen and her guest scientists, Dr. Steven Bruce and Dr. Dusty Weitz, answer students’ questions about why we sometimes lose teeth, why permanent teeth don’t grow back and how often you should brush and floss.
How to Watch Science Trek
Science Trek is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.
![Science Trek](https://image.pbs.org/curate/2bc984e5-101b-457d-b711-13c3a3043211.jpg?format=webp&resize=860x)
Science Trek
Science Trek is a place where parents, kids, and educators can watch short, educational videos on a variety of science topics. Every Monday Science Trek releases a new video that introduces children to math, science, technology, engineering, and math (STEM) career potentials in a fun, informative way.Video has Closed Captions
You can chew on different things because of the shape of your teeth. (4m 32s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipScience Trek is a local public television program presented by IdahoPTV
Laura Moore Cunningham Foundation