Micro-robots to root out toothbrushes
TOOTHBRUSHES could be replaced by shape-shifting micro-robots which scrub, rinse and floss your gnashers without any manual effort.
Scientists from Pennsyvania University have technology to make it easier for older or disabled people.
The micro-robots are made of iron oxide nanoparticles that create a chemical reaction in the mouth, releasing antimicrobials to kill off plaque.
They are directed using a magnetic field and form bristle-like structures to sweep away plaque from broad surfaces of the teeth, or elongated strings to slip between gaps like floss.
Experiments on fake and real human teeth found they can eliminate nearly all biofilms that lead to cavities and gum disease.