Tag: Teeth and Dentistry

Does Your Toothbrush Have an App Yet?

When Theresa Gucciardo-Perry discovered a cracked crown in her mouth in April, she dreaded the idea of going to a dentist to get it replaced. The Cortlandt Manor, N.Y., resident has undergone more than 18 root canal procedures; she also has five implants, with crowns on all but her front teeth. She hated the procedure […]

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If You Hate Floss, It’s O.K. to Try These Alternatives

My dental hygienist and I have a longstanding, unspoken agreement: I won’t get any cavities, and she’ll pretend to believe me when I tell her I floss every day. Truth be told, it’s more like once a week. Despite reports that flossing may be “overrated,” the American Dental Association (A.D.A.) and the US Department of […]

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Crocodiles Went Through a Vegetarian Phase, Too

Imagine you’re a small mammal of the Mesozoic. Snuffling around one day, you run into a cat-size, scaly, big-eyed reptile that looks not unlike a crocodile found later in the 21st century. Spotting you, he opens his mouth wide to reveal … tiny, intricate teeth. Then he turns his head and munches on some leaves. […]

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How an Arctic Hyena Was Found in Canada, Then Lost, Then Found Again

This past February, Jack Tseng sat down in a warehouse room at the Canadian Museum of Nature’s research facilities in Gatineau, Quebec, to examine a pair of million-year-old teeth. Peering through a microscope, he studied their cusps and ridges. “Within 5 minutes, I could tell,” he said. These were the teeth of ancient hyenas — […]

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Meet the Deep-Sea Dragonfish. Its Transparent Teeth Are Stronger Than a Piranha’s.

Unassuming dragonfish lurk in the twilight zone, more than 1,600 feet under the surface of the ocean. Dark, eel-like, and roughly three and a half inches long, these deep-sea creatures glow with bioluminescence and have evolved a complex sensory system that allows them to detect even the subtlest movements in the ocean’s shadowy realms, then […]

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