T. rex and other big dinosaurs had teeth that were specialized for tearing through flesh and bone -- only one living animal has similar tooth structure. Can you guess which?
Super shark Megalodon has a new claim to fame: its teeth were largely comprised of ultra-strong fluoride.
An aggressive predatory fish covered with armor featured the most primitive teeth known to date.
Spider silk is no longer the strongest known biological material, since that distinction now goes to the teeth of a rather unimposing marine creature.
Next time you're out walking and chewing gum, consider that you might actually be practicing good oral hygiene while you stroll. It turns out that some gums trap their fair share of bacteria, leading to a cleaner mouth.
The stark, barren landscape of Banks Island in Canada has yielded more than 8,000 shark teeth that date back millions of years.
Athletes are often dogged by decaying teeth and gum disease, a problem in which sport drinks, high-carb diets and training regimens may play a part.
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