Tehran What if, instead of waiting days or weeks for a cast to be produced, your dentist could quickly scan your jaw and “print” your new teeth using a rapid prototyping machine known as a 3D ...

No, it isn't the misshapen genitalia of the eponymous creature from the Alien movies: It's a 3D-printed toothbrush that promises to give you "perfectly clean teeth" in just six seconds, with ...