The quest for minty-fresh breath goes back at least 5,000 years. Around 3000 BCE, Ancient Egyptians equated beauty and health with a good set of teeth. They mixed ground-up oxen hooves, pumice and ...

Dental hygiene aficionados have surely noticed a new format battling for a share of the oral hygiene market. Toothpaste tablets are dry, pressed-powder pills about the size of an aspirin or a pea.