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Articles on Teeth

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It wasn’t flying that gave birds the advantage. Corey Ford/Stocktrek Images via Getty Images

How did birds survive while dinosaurs went extinct?

Birds and dinosaurs lived together for millions of years, but only toothless birds survived the asteroid impact that upended life on Earth.
Any hominid fossil find with molar teeth can be plugged into a new equation that reveals its species’ prenatal growth rate. Gil Cohen-Magen/AFP via Getty Images

Fossil teeth reveal how brains developed in utero over millions of years of human evolution – new research

Using a new equation based on today’s primates, scientists can take a few molar teeth from an extinct fossil species and reconstruct exactly how fast their offspring grew during gestation.
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.

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