Novel products could lead to fewer dates with the drill
Smile wide and check out those pearly whites in the mirror. Now, look closer. The action going on behind that grin might surprise you, especially if you didn't brush after lunch.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.