News tagged with teeth

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Jaws -- 4 million BC

It might sound like a mashup of monster movies, but palaeontologists have discovered evidence of how an extinct shark attacked its prey, reconstructing a killing that took place 4 million years ago.

Mar 16, 2010
4.7 / 5 (9) 0 | with audio podcast

Mechanism for Burgess Shale-type preservation

The Burgess Shale of British Columbia is arguably the most important fossil deposit in the world, providing an astounding record of the Cambrian "Explosion," the rapid flowering of complex life from single-celled ancestors. ...

Mar 07, 2012
5 / 5 (2) 1

New evidence on how fluoride fights tooth decay

In an advance toward solving a 50-year-old mystery, scientists are reporting new evidence on how the fluoride in drinking water, toothpastes, mouth rinses and other oral-care products prevents tooth decay. ...

May 01, 2013
4.2 / 5 (10) 2

Open wide and say 'zap'

A group of researchers in Australia and Taiwan has developed a new way to analyze the health of human teeth using lasers. As described in the latest issue of Optics Express,, by measuring how the surface of a tooth respon ...

Aug 18, 2009
4 / 5 (1) 0