Teeth are there to stop the rice from falling into the pits of your gums.
a cavity (literally, 'bug tooth,' because parents would tell their kids, 'If you get a cavity, bugs will crawl in the hole and nest and lay eggs.')
the gnarled, wish-I-had-braces teeth that Japanese are famous for. Lots of Japanese find it cute, in fact.
|奥||waaay in the back||BIG||大|
STOP the tooth decay.
Use a BIG toothbrush from the front, to way in the back.