Add Yahoo as a preferred source to see more of our stories on Google. A new study, published on May 21 in the journal Nature, has revealed surprising information about the origins of human teeth. Our ...

The enamel on our teeth is the hardest tissue on the human body. A new study looks at the nanoscale structure of enamel from teeth dating as far back as 18 million years ago to see how it's changed.

The toothlike structures represent a step toward bioengineered replacements for dental implants, say researchers behind the work. Lose an adult tooth, and you’re left with limited options that ...