Become shark-like: regrow your teeth
It would be rather handy if teeth could be regrown at will. Think of all the sweets kids could eat, then get new teeth…ok, that’s not what this is for! A team from the University of Alberta has managed to develop a technology that permits human dental tissue to be regrown.

The revolutionary technology consists of an ultrasound transducer that is small enough to fit inside the mouth of a patient. The transducer, or LIPUS (low-intensity pulsed ultrasound), fits on braces or a crown and pulses to promote growth of roots and teeth. The device is expected to be available to the general public in about two years. No more Fixodent
via
Azonano.com