A nifty gadget promises to give gap-toothed hockey and rugby players a healthy new smile. It’s an ultrasound transmitter that fits neatly inside a person’s mouth like a brace and could help to regrow damaged teeth.
A nifty gadget promises to give gap-toothed hockey and rugby players a healthy new smile. It’s an ultrasound transmitter that fits neatly inside a person’s mouth like a brace and could help to regrow damaged teeth.