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Keyword: tooth

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  • How to eliminate pain tied to tooth decay [Grow 'new' teeth]

    11/17/2015 10:29:18 AM PST · by Red Badger · 26 replies ^ | November 17, 2015 | by Zen Vuong & Provided by: University of Southern California
    A scanning electron microscope image of newly-grown enamel using amelogenin-chitosan hydrogel. Credit: Herman Ostrow School of Dentistry of USC ==================================================================================================== Dual discoveries at USC propose a promising method to regrow nonliving hard tissue, lessening or even eliminating pain associated with tooth decay, which the National Institutes of Health calls the most prevalent chronic disease. Janet Moradian-Oldak, a professor at the Herman Ostrow School of Dentistry of USC, has investigated methods to regrow tooth enamel for the past two decades. The process is especially tricky because unlike bone, mature enamel cannot rejuvenate. Tooth enamel is a nonliving tissue. The a-ha moment...
  • Discovery Of 47 Teeth In Chinese Cave Changes Picture Of Human Migration Out Of Africa

    10/17/2015 9:09:33 PM PDT · by zeestephen · 33 replies
    Los Angeles Times ^ | 15 October 2015 | Amina Khan
    Forty-seven smooth teeth dug out of a cave in southern China reveal that Homo sapiens may have arrived there 80,000 years ago...The findings, published this week in the journal Nature, may compel researchers to reconsider their theories about human migrations out of Africa.
  • Flossing your teeth can be a waste of time-and do more HARM than good, leading dental expert claims

    10/15/2015 11:05:04 AM PDT · by simpson96 · 69 replies
    Daily Mail (U.K.) ^ | 10/15/2015 | Jane Symons
    We're constantly told we should be flossing our teeth - despite it being fiddly, time-consuming and sometimes painful.Figures show that less than a fifth of us actually bother to do it regularly - with many tacky rolls of floss gathering dust in bathrooms the world over.Now, one leading expert has warned that if not performed correctly, flossing can actually do more harm than good.Here, Robin Seymour, Emeritus Professor of Dental Sciences at Newcastle University and leading periodontologist, explains why - and suggests other, easier ways to get perfect pearly-whites...Facebook
  • 400,000-year-old dental tartar provides earliest evidence of manmade pollution

    06/17/2015 10:07:39 PM PDT · by SunkenCiv · 34 replies
    Phys dot org ^ | June 17, 2015 | Tel Aviv University
    In what Prof. Barkai describes as a "time capsule," the analysed calculus revealed three major findings: charcoal from indoor fires; evidence for the ingestion of essential plant-based dietary components; and fibers that might have been used to clean teeth or were remnants of raw materials. "Prof. Karen Hardy published outstanding research on the dental calculus of Neanderthals from El Sidron cave in Spain, but these dated back just 40,000-50,000 years—we are talking far earlier than this," said Prof. Barkai. "This is the first evidence that the world's first indoor BBQs had health-related consequences," said Prof. Barkai. "The people who lived...
  • Attorney General cracks tooth, misses trip to Aspen

    07/02/2009 10:28:49 AM PDT · by Colonel Kangaroo · 17 replies · 546+ views
    Reuters Blogs ^ | 7-2-2009 | Tabassum Zakaria
    Must be playing all that hardball by President Barack Obama’s administration. Attorney General Eric Holder becomes the second Cabinet official to miss travel after breaking something. Holder, the country’s top law enforcement official, cracked a tooth last night and missed a trip to Aspen, Colorado, where he had been scheduled to attend the “Aspen Ideas Festival” on the eve of a long weekend for the Fourth of July holiday.
  • Dad extracts tooth using floss, golf club, ball

    01/04/2015 7:46:47 AM PST · by Brother Cracker · 43 replies
    Odd_News ^ | Jan. 2, 2015 | Ben Hooper
    WASHINGTON, - An American dad made himself and his 7-year-old son into viral stars with a video chronicling a baby tooth extraction using dental floss, a golf club and a golf ball. Phil Smith said his son, Noah, complained of pain when they attempted to simply pull the loose tooth out of his mouth, so he devised a system using a piece of floss to connect the tooth to a golf ball he then struck with a club. "My 7-year-old wanted to pull his tooth but was concerned it would be too painful to pull SLOWLY," Smith wrote in the...
  • Doctors Pulled a Tooth Out of a Man's ... What?

    08/09/2014 9:46:27 AM PDT · by EveningStar · 12 replies
    LiveScience ^ | August 7, 2014 | Bahar Gholipour
    Nosebleeds are common among children and young adults, but one young man's frequent nosebleeds turned out to have a rather unusual cause: He had a tooth in his nose, according to a new report of his case. After suffering from nosebleeds once or twice a month for three years, the 22-year-old man in Saudi Arabia consulted a doctor, who found an ivory-white, bony mass, about half an inch (1 centimeter) long in the man's nose. The doctors then consulted with dentist colleagues, who concluded that the mass was actually an extra tooth that had somehow ended up growing in his...
  • Alligator Stem Cells Offer Hope for Tooth Regeneration in Humans

    05/18/2013 2:08:28 PM PDT · by LibWhacker · 17 replies ^ | 5/17/13 | Natali Anderson
    An international team of scientists led by Prof Cheng-Ming Chuong from the University of Southern California has discovered unique cellular and molecular mechanisms behind tooth renewal in American alligators (Alligator mississippiensis).Their findings, published in the Proceedings of the National Academy of Sciences, pave the way for tooth regeneration in people. “Humans naturally only have two sets of teeth – baby teeth and adult teeth. Ultimately, we want to identify stem cells that can be used as a resource to stimulate tooth renewal in adult humans who have lost teeth. But, to do that, we must first understand how they renew...
  • Tooth theft suspect may have had good reason to go for gold

    03/12/2011 7:58:20 AM PST · by ConservativeStatement · 3 replies
    Boston Herald ^ | March 12, 2011 | Renee Nadeau Algarin
    If you happen to be missing all your own front teeth, the temptation when you see a man sporting a full set of choppers — gold, no less! — is obviously keen. Thus, Robert Ester, 46, of Worcester came to be standing before a judge yesterday for allegedly stealing another man’s grill, Springfield police said.
  • Researchers: Ancient human remains found in Israel

    12/28/2010 9:05:38 AM PST · by Immerito · 29 replies · 5+ views
    Yahoo! News ^ | December 27, 2010 | DANIEL ESTRIN,
    JERUSALEM – Israeli archaeologists said Monday they may have found the earliest evidence yet for the existence of modern man, and if so, it could upset theories of the origin of humans. A Tel Aviv University team excavating a cave in central Israel said teeth found in the cave are about 400,000 years old and resemble those of other remains of modern man, known scientifically as Homo sapiens, found in Israel. The earliest Homo sapiens remains found until now are half as old.
  • Tooth Regeneration Gel Could Replace Painful Fillings

    08/01/2010 10:05:39 PM PDT · by neverdem · 29 replies · 1+ views
    Discovery ^ | Jun 28, 2010 | Eric Bland
    Could this new gel be the biggest dental breakthrough since the introduction of fluoride? THE GIST A new gel could soon eliminate painful fillings and root canals. The technology doesn't prevent cavities; it heals teeth by regenerating them. Although this is good news for teeth, the research could also be applied to heal bones and other tissues in the body. Dentists could soon hang up their drills. A new peptide, embedded in a soft gel or a thin, flexible film and placed next to a cavity, encourages cells inside teeth to regenerate in about a month, according to a new...
  • Gel that can help decayed teeth grow back could end fillings

    07/27/2010 8:47:12 AM PDT · by Red Badger · 18 replies · 4+ views ^ | 7/27/2010 | Pat Hagan
    Open wide: Thanks to a new gel, soon this won't hurt A gel that can help decayed teeth grow back in just weeks may mean an end to fillings. The gel, which is being developed by scientists in France, works by prompting cells in teeth to start multiplying. They then form healthy new tooth tissue that gradually replaces what has been lost to decay. Researchers say in lab studies it took just four weeks to restore teeth back to their original healthy state. The gel contains melanocyte-stimulating hormone, or MSH. We produce this in the pituitary gland, a pea-sized gland...
  • Parents Pull Child's Tooth With RC Car

    12/30/2009 11:42:53 PM PST · by Thirteen · 37 replies · 1,428+ views ^ | Danny Gallagher
    Health-care reform might have become just another political ploy to earn votes come Election Day up on Capitol Hill -- but it's causing some parents to resort to Middle Ages-style medicine that even Theodoric of York wouldn't prescribe. We don't know if the lack of adequate dental care in the country forced these two parents to pull their child's loose tooth out the "Radio Shack way" -- tying one end of a string around the tooth and another to the end of a remote-controlled car and sending it barreling toward a makeshift ramp at Mach 2 -- but we're pretty...
  • Neandertals Ate Their Veggies, Tooth Study Shows

    04/29/2008 1:18:25 PM PDT · by blam · 13 replies · 126+ views
    National Geographic News ^ | 4-28-2008 | ShowsSara Goudarzi
    Neandertals Ate Their Veggies, Tooth Study ShowsSara Goudarzi for National Geographic NewsApril 28, 2008 Tiny bits of plant material found in the teeth of a Neandertal skeleton unearthed in Iraq provide the first direct evidence that the human ancestors ate vegetation, researchers say. Little is known about diet of Neandertals (also spelled Neanderthals), although it's widely assumed that they ate more than just meat. Much of what is known about their eating habits has come from indirect evidence, such as animal remains found at Neandertal sites and chemical signatures called isotopes detected in their teeth. The new hard evidence is...
  • Experimental chewy mint beats tooth decay

    04/09/2008 6:12:52 PM PDT · by CutePuppy · 5 replies · 211+ views ^ | April 9, 2008 |
    Experimental chewy mint beats tooth decay 09th April 2008 A new chewable mint looks set to solve the worldwide problem of tooth decay. BasicMints is an experimental fluoride-free treatment designed to mimic a component in human saliva that neutralises acids in the mouth that can erode tooth enamel. US researchers tested the product on 200 children – aged between 10-and-a-half and 11 – over a year. The results show that children who were administered BasicMints had 62% fewer cavities in their molars when the year was up, compared to children in the placebo group. The research team, from New York's...
  • Tooth Scan Reveals Neanderthal Mobility

    02/09/2008 6:25:24 PM PST · by blam · 95 replies · 125+ views
    Psysorg - AP ^ | 1-9-2008 | Elena Becatoros - AP
    Tooth Scan Reveals Neanderthal Mobility By ELENA BECATOROS, Associated Press Writer A 40,000-year-old tooth is seen in this undated hand out photo released by Greek Culture Ministry. Analysis of the tooth uncovered in southern Greece indicates for the first time that Neanderthals may have traveled more widely than previously thought, paleontologists announced on Friday, Feb. 8, 2008. (AP Photo/Greek Culture Ministry)(AP) -- Analysis of a 40,000-year-old tooth found in southern Greece suggests Neanderthals were more mobile than once thought, paleontologists said Friday. Analysis of the tooth - part of the first and only Neanderthal remains found in Greece - showed...
  • Bulgarian Paleontologists Stumble Upon Prehistoric Tooth

    11/29/2007 9:46:04 AM PST · by blam · 12 replies · 302+ views ^ | 11-28-2007
    Bulgarian Paleontologists Stumble upon Prehistoric Tooth 28 November 2007, Wednesday A team of scientists with Bulgaria's Natural History Museum have unearthed a tooth dated back to the Late Miocene, the head of the fossil and recent Mammalia museum department Dr. Nikolay Spasov announced on Wednesday. The tooth is some seven million years old and belonged to a hominid.A team of archaeologists, paleontologists, paleo-anthropologists and biologists from the museum spent the last ten years in researching the flora, the fauna and the overall nature setting in Bulgaria from the time of the late Neogene (10,7 - 5,3 million years BC). The...
  • First Europeans Came From Asia, Not Africa, Tooth Study Suggests

    08/08/2007 9:17:01 AM PDT · by BGHater · 35 replies · 907+ views
    National Geographic News ^ | 06 Aug 2007 | Kate Ravilious
    Europe's first early human colonizers were from Asia, not Africa, a new analysis of more than 5,000 ancient teeth suggests. Researchers had traditionally assumed that Europe was settled in waves starting around two million years ago, as our ancient ancestors—collectively known as hominids—came over from Africa. But the shapes of teeth from a number of hominid species suggest that arrivals from Asia played a greater role in colonizing Europe than hominids direct from Africa. These Asian hominids may have originally come from Africa, the scientists note, but had evolved independently for some time. (Related: "Did Early Humans First Arise in...
  • Fossil Tooth Belonged to Earliest Western European, Experts Say(in Spain, 1.2million years old)

    07/02/2007 9:39:19 PM PDT · by TigerLikesRooster · 10 replies · 511+ views
    National Geographic News ^ | 07/02/07 | James Owen
    Fossil Tooth Belonged to Earliest Western European, Experts Say James Owen for National Geographic News July 2, 2007 A fossil tooth discovered last week in Spain belonged to the oldest known western European, scientists have announced. The early-human molar was discovered last Wednesday at the Sierra Atapuerca archaeological site in the Burgos Province of northern Spain. Caves at the site, which lies about 15 miles (25 kilometers) east of the provincial capital of Burgos, have previously yielded other prehistoric human remains (map of Spain). Early human fossils found at the nearby Gran Dolina site in 1994 indicated that humans had...
  • Tooth Decay Analysis Supports 'Out Of Africa' Theory Of Human Evolution

    03/17/2007 5:08:24 PM PDT · by blam · 16 replies · 992+ views
    Science Daily ^ | 3-16-2007 | New York University
    Source: New York University Date: March 16, 2007 Tooth Decay Analysis Supports 'Out Of Africa' Theory Of Human Evolution Science Daily — A New York University College of Dentistry (NYUCD) research team has found the first oral bacterial evidence supporting the dispersal of modern Homo sapiens out of Africa to Asia. The team, led by Page Caufield, a professor of cariology and comprehensive care at NYUCD, discovered that Streptoccocus mutans, a bacterium associated with dental caries, has evolved along with its human hosts in a clear line that can be traced back to a single common ancestor who lived in...