When a Lake Malawi cichlid loses a tooth, a new one drops neatly into place as a replacement. Why can't humans similarly regrow teeth lost to injury or disease? When a Lake Malawi cichlid loses a ...

That coat of enamel protecting our pearly whites originated from an unexpected source: primitive fish scales, according to new work published in Nature this week. Researchers studying both ancient and ...

Ever wonder why teeth hurt? Blame it on a prehistoric armored fish. While the outer layer of our teeth is coated in hard enamel, it’s the inner layer, called dentine, that feels pain. Dentine carries ...

A pet fish adorned with tooth-like scales is helping biologists tackle a longstanding debate about the origin of teeth, and explore how body structures can be lost and regained during evolution. The ...

CHICAGO -- The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth's oceans 465 million years ago. While our ...

Add Yahoo as a preferred source to see more of our stories on Google. Ever wonder why teeth hurt? Blame it on a prehistoric armored fish. While the outer layer of our teeth is coated in hard enamel, ...