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ANCIENT TEETH A pair of beaver teeth found in northeast Oregon, US, have been dated at up to 7.3million years old, according to Associated Press. The teeth are said to be almost identical to living beaver teeth, showing that the animal has changed little.
BOOZY INCENTIVE Texas-based US dentist Clint Herzog has taken a unique approach to encouraging patients to attend – free beer and wine while they wait. He says the unorthodox approach has proved a hit with nervous types who say it helps them relax before appointments. Source: Daily Mail
SOUNDBITE An unusual hearing aid that transmits sound via the teeth has been approved for use in Europe, Dentistry reveals. The removable, non-surgical ‘Soundbite’ hearing system consists of a small microphone worn behind the ear and a retainer-like device that attaches to the teeth.
BYE BYE FILLINGS Scientists at Sheffield Uni have discovered pufferfish teeth regenerate every two weeks and believe their unique beak could hold the key to continuous tooth replacement in humans.
CROSSWORD
ACROSS 1 Brand name luting cement (7) 5 Orthodontic device (5) 8 Brand name temporary filling (5) 9 Cavity or sac (5) 10 Collection of pus formed in cavity (7) 11 Closed sac (4) 13 Of the midline (6) 14 Thin layer of restorative material (6) 17 Long-legged wading bird (4) 20 Root device (7) 23 Cable-like bundle of axons (5) 24 Brand name cement (5) 25 Hygiene procedure (shorthand) (1,3,1) 26 Of the palate (7)
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Orates (7)
2 Modifies (7) 3 Supple (5) 4 Practice of going naked (6) 5 Fundamental (5) 6 Pre-decimal Indian coins (5) 7
The Orient (4)
12 Honest (8) 15 Shoulder ornament (7) 16 First class (3) 18 Nobleman (5) 19 Broom use (5) 21 Student (5) 22 Collection of wildebeest (4)
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Stumped? The answer is at the bottom of the page NAME THAT BITE
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See answers online at
www.mddus.com. Go to the Notice Board page under News and Events.
PHOTO: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
NAME THAT BITE: SEM of mouse molars
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