Not everyone is born with a killer white smile such as German tennis star Andrea Petkovic

While the popularity of a lily-white smile spawned a billion-dollar business for Procter & Gamble, for gold, it’s meant only more bad news.
Until a decade ago, about 67 tonnes of the yellow metal, worth $US2.7 billion ($3.5 billion) today, were filling, capping and crowning teeth worldwide annually. In the last five years, though, demand has plunged almost 60 per cent, according to the World ...

Orange Juice Worse for Teeth than Whitening

With the increasing popularity of whitening one’s teeth, researchers at the Eastman Institute* for Oral Health, part of the University of Rochester Medical Center, set out to learn if there are negative effects on the tooth from using whitening products.