IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Combat tooth decay-- have cleaner, ...

The $80 million U.S. dentifrice industry was as fidgety last week as a colony of Lactobacillus acidophilus milling around in a test tube. Its chemists, prodded by sales executives, were feverishly ...

If you’ve never heard of tooth powder, you’re not alone. This age-old product was the precursor to toothpaste, but it fell out of favor decades ago. Even though it’s hard to find on store shelves, ...