This 'hi tech' toothbrush from Japan is now available in the UK.
It looks like an ordinary toothbrush, but closer examination reveals a rod that runs through the replaceable bristle head and into the handle. This metal rod is the secret of Soladey.  It's made of a patented semiconductor material that when activated by light produces electrons that help to remove dental plaque.

How it works
When exposed to any light source (a fluorescent bathroom light, a plain light bulb, or sunlight), the photosensitive titanium rod inside Soladey converts light into negatively charged electrons (ions). The rod releases these ions, which blend with saliva to attract positive (hydrogen) ions from the acid in the dental plaque. 
The acid is then neutralized and plaque is disintegrated - a scientific approach to a cleaner and healthier mouth! Toothpaste is not required as water (saliva) is the active ingredient - oral hygiene now becomes not only natural, but also economical! For those who find it hard to give up toothpaste, use only a very small amount!
 
Benefits
Bacteria in plaque attack food, producing acid. This acid causes bad breath, tooth decay, and gum disease. Normally, saliva neutralizes this action. But when plaque builds up, it acts as a barrier, preventing the neutralizing action of the saliva. According to clinical studies, the Soladey can help stop this plaque build-up. Working with saliva, the brush controls and reduces the bacteria responsible for plaque.

Reasons for using Soladey
Reduces plaque build-up: Soladey actually reduces plaque build-up by the natural cleansing action of safe, free electrons emitted from the revolutionary semiconductor rod 
Teeth look and feel cleaner: through superior cleaning ability, plaque adhesion to your teeth is reduced photo-electronically
Toothpaste is unnecessary: effective plaque removal is possible with or without toothpaste; ordinary light activates the patented semiconductor rod and cleans your teeth without abrasives
Affordable and economical: with sensible care, the handle and rod will last for years, requiring only inexpensive replaceable heads. The replacement heads provide all the benefits of the Soladey at a comparable cost of a regular toothbrush