Oral hygiene is important, but it's not normally associated with high tech gadgets. Even the mechanical toothbrush has been around for decades and the "scientifically designed" brushes of today are really just variations of ancient toothbrushes with bristles pointed in different directions. Then, there's this 3-D printed toothbrush. It's different. It takes a scan of your teeth, then prints out the perfect brush to custom fit to your mouth. Check it out: