High-Pressure Tooth Spray Cleans Teeth With Water, Not Bristles

Toothbrush-like contraptions that spray water into your teeth holes have been around for years, but Philips' new patent has several innovations that makes sure you don't blast your gums into submission. The spray head has probes that can detect how far away it is from your teeth, ensuring optimum distance. » 5/13/08 6:00pm 5/13/08 6:00pm