Scientists have invented a remarkable toothbrush that lets you listen to pop songs while you scrub away - by transmitting the sound waves through your teeth and jawbone to your ear.
The £7 device, called Tooth Tunes, plays for exactly two minutes - the amount of time dentists recommend should be devoted to brushing every morning and night.
It is initially being targeted at children, but could also be marketed to the so-called iPod generation of adults.
A single piece of music is stored in a microchip in the brush's handle. When a button is pushed, it plays on a minicomputer and is transported along the bristles, through the teeth and jawbone and into the ear.
Replacement chips with different songs will be available.
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