Articles on Teeth

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Fossilized teeth from a modern human who lived in Israel close to 200,000 years ago. Israel Hershkovitz, Tel Aviv University

Fossil jawbone from Israel is the oldest modern human found outside Africa

New discoveries are changing archaeologists' ideas about the origins of our own species and our migration out of Africa. This fossil pushes Homo sapiens' African exodus date back by 50,000 years.
The edges of your lost tooth are sharp because when the root of the baby tooth is being eaten away, it tends to start from the middle of the root. That leaves a sharp edge behind when the tooth breaks off. Flickr/Stephanie Young

Curious Kids: My tooth fell out. Why is it so spiky on the bottom?

Nicholas, aged 6, was watching TV one day when his tooth fell out. He noticed that the bottom edge of the tooth was very spiky. Now he wants to know why.
Toothpaste helps remove plaque to prevent decay and gum disease. kikovic/Shutterstock

Health Check: how to choose toothpaste

Choosing a toothbrush is relatively simple. But how on earth do you decide between the 50-odd toothpastes on the supermarket shelves?
This skull belongs to the carnivorous gorgonopsian therapsid Smilesaurus ferox which lived 255 million years ago. Cradle of Humankind/Flickr/Wikimedia

You can thank our pre-mammalian ancestors for your sexy teeth

Modern sabre-tooth mammals have their canines constantly on display. This allows them to seduce mates. But was sexual selection also an important phenomenon among our pre-mammalian ancestors?

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