The day may soon come when plugging into a power socket helps fight tooth decay. Israeli company Fluorinex Active has come up with a device that uses electricity to ionize a fluoride-based gel that forms a lasting protective layer over the teeth.
The little gadget looks like the sort of tray that's used for teeth bleaching, and it comes in two models: one with rechargeable batteries, another with an external power supply. The gadget provides a small electrical current (6 to 9 volts) to activate a durable uptake of fluorides that adhere chemically to a tooth's mineral layer. … Read more