How clean are your teeth?

Do you remember what things were like in the old days, when brushing your teeth was an exhausting ritual of getting a toothbrush and rubbing it back and forth in your mouth for a few minutes? Thankfully, the wonders of modern technology have solved this problem for us, with the invention of the electric toothbrush.

An electric toothbrush looks like a slightly bigger version of a normal toothbrush, but when you put in a battery and press a button, it vibrates for you. Despite the mockery they sometimes attract, however, electric toothbrushes do have a serious purpose: while they don