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El Te Dice

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El Te Dice
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Chewing Robot' could revolutionise dental research

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Do You Believe In 'Tooth Worms?' Micro-images Of Strange, Worm-like Structures Uncovered Inside Dissected Molar

ScienceDaily (July 28, 2009) — New, micro-images of strange, worm-like structures uncovered inside a dissected molar might have been held in ancient times as proof that gnawing tooth worms were the cause of tooth decay, a theory widely believed in many cultures before modern times. The structures are not worms, but what they are is still in question. Studies by University of Maryland Dental School researchers recently presented at the annual meeting of the Microscopy Society of America in Richmond revealed cylindrical objects extending or ‘growing’ out of the natural pores or tubules of teeth. Inside a human tooth, more than 50,000 such tubules per square millimeter act as channels running from the nerve up through the tooth. They are associated with transporting hot or cold sensitivity to the tooth nerve. [A human hair by comparison is 40 micrometers wide.] For years, scientists have debated the exact nature of the worm-like structures, which were photographed in clear detail by Ru-Ch...
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"Researchers aim to give surgeons 3D maps, directions of human body"

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