Mouth Power (http://www.mouthpower.org) can be done individually by students in a lab, but would be better on an interactive board as a class. Users take a trip through a lab to learn about dental hygiene and work through activities to earn teeth for their smile. The activity goes beyond the basics of telling students to brush and shows how to brush and the correct way to floss. It also has a neat time lapse feature to show what happens when you don't take care of your teeth.
Cons: There isn't voice audio on everything, so non-readers will need assistance.