It's been part of humanity's hygiene regimen for more than 4,000 years, but have you ever stopped to think what's actually in the stuff you're smearing across your teeth? The ingredients of modern toothpaste may read like a mad scientist's shopping list, but they're far better than what our ancestors had to endure for…
Designed for those times when you've just had a meal but can't sneak away to brush your teeth, the Rolly is a small rubber disc covered in 276 spiky bristles that promises to be as effective at cleaning your teeth as brushing, when chewed like a piece of gum.
Using a polishing technique previously employed in the semiconductor industry, a professor has discovered that it's possible to make a tooth too slick to have bacteria stick to. For reals.