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Articles on Teeth

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Megalodon would have dwarfed today’s great white sharks. Christina Spence Morgan

Megalodon sharks ruled the oceans millions of years ago – new analyses of giant fossilized teeth are helping scientists unravel the mystery of their extinction

Megalodon, the world’s largest known shark species, swam the oceans long before humans existed. Its teeth are all that’s left, and they tell a story of an apex predator that vanished.
A national dental care program for low-income Canadians plans to launch coverage for children under age 12 in 2022. (Shutterstock)

7 principles to guide a national dental care program in Canada

A national dental care program is welcome news, but raises several ‘billion-dollar’ questions about how the program will work and what will be covered. Here are seven principles to guide decisions.
Today, teens are often seen as troublesome and difficult. Ancient Roman writers also described adolescence as a period of “hooliganism and debauchery.” (Shutterstock)

Bones and teeth help reveal whether teenagers have always been a source of worry for their parents

Teens across millennia have yearned to explore, try new things and participate in risky behaviours. The key difference, however, seems to be the experience of a rebellion or restlessness.
Your teeth will be better off if you refrain from chomping on ice cubes. Credit: Laurence Monneret/The Image Bank via Getty Images

Is chewing on ice cubes bad for your teeth?

A dentist explains why this is a habit worth breaking – no matter the cause or the strength of your cravings to keep doing it.
The health of your teeth has a major effect on your body. Rudy Fargo/Unsplash

The truth about tooth decay

Cavity-free teeth depend on many factors, and heredity may not be the most important.
The ruins of the Temple of Victory in Himera, which was constructed to commemorate the first battle in 480 B.C. Katherine Reinberger

Teeth of fallen soldiers hold evidence that foreigners fought alongside ancient Greeks, challenging millennia of military history

Are the descriptions of war passed down by ancient historians accurate? A site in Sicily provided a rare chance to fact-check stories told about two battles from more than 2,400 years ago.

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