News tagged with human teeth
Researchers Crack the Mystery of Resilient Teeth
Apr 17, 2009 |
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(PhysOrg.com) -- After years of biting and chewing, how are human teeth able to remain intact and functional? A team of researchers from The George Washington University and other international scholars have ...
Home tooth bleaching slightly reduces enamel strength
Apr 14, 2009 |
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New research shows that human teeth lost some enamel hardness after the application of several different products used in the home to whiten teeth. The study suggests that future generations of such products might be reformulated ...
Evidence from dirty teeth: Ancient Peruvians ate well
Other Sciences / Archaeology & Fossils
Dec 01, 2008 |
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Starch grains preserved on human teeth reveal that ancient Peruvians ate a variety of cultivated crops including squash, beans, peanuts and the fruit of cultivated pacay trees.
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Form of Mercury in Older Dental Fillings Unlikely to be Toxic: Study
Chemistry / Analytical Chemistry
Nov 11, 2009 |
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(PhysOrg.com) -- Amid the on-going controversy over the safety of mercury-containing dental fillings, a University of Saskatchewan research team has shed new light on how the chemical forms of mercury at the surface of fillings ...
Look ma, no mercury in fillings!
Nov 09, 2009 |
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Tooth enamel is hardest material in the human body because it's made almost entirely of minerals. As tough as it may be, however, enamel can be broken down by bacteria, forming cavities and eventually destroying the tooth. ...
Scientists launch effort to sequence the DNA of 10,000 vertebrates
Nov 04, 2009 |
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Scientists have an ambitious new strategy for untangling the evolutionary history of humans and their biological relatives: Create a genetic menagerie made of the DNA of more than 10,000 vertebrate species. The plan, proposed ...
Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
Oct 29, 2009 |
4.9 / 5 (15) |
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(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
The largest bat in Europe inhabited northeastern Spain more than 10,000 years ago
Other Sciences / Archaeology & Fossils
Oct 29, 2009 |
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Spanish researchers have confirmed that the largest bat in Europe, Nyctalus lasiopterus, was present in north-eastern Spain during the Late Pleistocene (between 120,000 and 10,000 years ago). The Greater Noctul ...
Taking medicine for HIV proves hard to swallow for many people
Medicine & Health / HIV & AIDS
Oct 22, 2009 |
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Highly active antiretroviral therapy has increased the longevity and quality of life for people living with human immunodeficiency virus. But it requires strict adherence in taking the medicine, something that is extremely ...
Ancient 'Lucy' Species Ate A Different Diet Than Previously Thought
Other Sciences / Archaeology & Fossils
Oct 22, 2009 |
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(PhysOrg.com) -- Research examining microscopic marks on the teeth of the "Lucy" species Australopithecus afarensis suggests that the ancient hominid ate a different diet than the tooth enamel, size and sh ...
Ancient Lemurs Take Bite Out of Evolutionary Tree (w/ Video)
Other Sciences / Archaeology & Fossils
Oct 21, 2009 |
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(PhysOrg.com) -- About 40 miles outside Cairo, Egypt, National Science Foundation-supported paleontologists from three American universities are revealing features of a newly discovered African primate and ...
Two-million-year-old evidence shows tool-making hominins inhabited grassland environments
Other Sciences / Archaeology & Fossils
Oct 21, 2009 |
3.5 / 5 (2) |
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In an article published in the open-access, peer-reviewed journal PLoS ONE on October 21, 2009, Dr Thomas Plummer of Queens College at the City University of New York, Dr Richard Potts of the Smithsonian Institution Nation ...
Building Up Broken Bones
Oct 14, 2009 |
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(PhysOrg.com) -- Any one of the 8 million Americans who suffer bone fractures each year knows how hard it is to wait for the bones to knit, or heal. Bone healing is also important for integration of dental ...
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