dryriver writes: A team of dentists has created a toothbrush they say can clean teeth thoroughly in less than six seconds. Manufacturer Blizzident uses the same scans dentists use to fit braces and an extremely precise 3D printer to create a brush for each individual customer. Each brush contains about 400 soft bristles and requires the wearer to grind their teeth in order to clean. Its makers say it eliminates brushing errors that people typically make, but experts say more research is needed. The technology comes at a price — a customer's first brush, which will last for a year, costs 299 euros ($405; £250). Subsequent brushes are cheaper, and old ones can be reconditioned for less than 100 euros, the company says. "Because you are brushing all your teeth at the same time, you are brushing extremely quickly," the company says. "You brush all the difficult-to-reach and interdental regions without even having to think about it."