http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. You can practically track Steve Barkley's stress by the level of activity in his temporomandibular joint, or TMJ, the hinge joint that connects the lower jaw to the temporal bone of the skull and helps one chew, talk and yawn. http://www.physorg.com/news178536962.html Medicine & Health Fri, 27 Nov 2009 19:40:04 EST news178536962 Robots may practice dentistry one day, but there will always be humans telling you to open wide, said a teacher on the cutting edge of tooth care. http://www.physorg.com/news178315688.html Medicine & Health Tue, 24 Nov 2009 22:40:03 EST news178315688 (PhysOrg.com) -- A new study pitting academic expertise against a computer in recreating a 425 million-year old jigsaw puzzle has discovered that there is no substitute for wisdom born out of experience. http://www.physorg.com/news177583145.html Other Sciences Mon, 16 Nov 2009 08:40:22 EST news177583145 With the help of a gum chomping machine and years of careful chemistry, University of Kentucky researchers have developed a chewing gum that can help replace toothpaste and a toothbrush, thus improving the health of soldiers in the field as well as children in poor countries. http://www.physorg.com/news177342174.html Medicine & Health Fri, 13 Nov 2009 14:20:02 EST news177342174 There is a high prevalence of nocturnal teeth grinding, or bruxism, in patients with obstructive sleep apnea (OSA), particularly in Caucasians. New research presented at CHEST 2009, the 75th annual international scientific assembly of the American College of Chest Physicians (ACCP), found that nearly 1 in 4 patients with OSA suffers from nighttime teeth grinding; this seems to be especially more prevalent in men and in Caucasians compared with other ethnic groups. http://www.physorg.com/news176395175.html Medicine & Health Mon, 02 Nov 2009 15:40:03 EST news176395175 It has long been known that acids can erode tooth enamel but a new Swedish study from the Sahlgrenska Academy at the University of Gothenburg, Sweden, shows that strong alkaline substances can damage teeth too - substances with high pH values can destroy parts of the organic content of the tooth, leaving the enamel more vulnerable. http://www.physorg.com/news175867898.html Medicine & Health Tue, 27 Oct 2009 13:50:03 EST news175867898 Joan Ketterer still recalls the button her son Edward got for donating his baby teeth to what was then a ground-breaking study looking at the effect of nuclear fallout on children born in the St. Louis-area in the 1960s. http://www.physorg.com/news175368568.html Medicine & Health Wed, 21 Oct 2009 18:30:55 EST news175368568 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 National Museum of Natural History and colleagues report the oldest archeological evidence of early human activities in a grassland environment, dating to 2 million years ago. The article highlights new research and its implications concerning the environments in which human ancestors evolved. http://www.physorg.com/news175330627.html Other Sciences Wed, 21 Oct 2009 08:20:01 EST news175330627 (PhysOrg.com) -- An 85 million-year-old plesiosaur fossil has been found with over 80 shark's teeth, suggesting the animal was the victim of sharks in a feeding frenzy. The find is perhaps the most spectacular example of a shark attack in the fossil record. http://www.physorg.com/news174052939.html Other Sciences Tue, 06 Oct 2009 14:40:01 EST news174052939 It's been a mystery: how can our teeth withstand such an enormous amount of pressure, over many years, when tooth enamel is only about as strong as glass? A new study by Prof. Herzl Chai of Tel Aviv University's School of Mechanical Engineering and his colleagues at the National Institute of Standards and Technology and George Washington University gives the answer. http://www.physorg.com/news169915589.html Technology Wed, 19 Aug 2009 16:00:03 EST news169915589 A group of researchers in Australia and Taiwan has developed a new way to analyze the health of human teeth using lasers. As described in the latest issue of Optics Express,, by measuring how the surface of a tooth responds to laser-generated ultrasound, they can evaluate the mineral content of tooth enamel -- the semi-translucent outer layer of a tooth that protects the underlying dentin. http://www.physorg.com/news169813870.html Physics Tue, 18 Aug 2009 11:50:02 EST news169813870 Dentists want those expensive crowns to stick to the teeth. But it doesn`t always happen because of contamination during the crown`s bonding. http://www.physorg.com/news167324182.html Medicine & Health Mon, 20 Jul 2009 15:57:31 EST news167324182 Researchers have warned people to beware of the damage that acidic beverages have on teeth. Yet, for some, the damage and problems associated with drinking sodas, citric juices or certain tea may have already begun to take effect. The question remains: What can be done to restore teeth already affected? http://www.physorg.com/news167056819.html Medicine & Health Fri, 17 Jul 2009 13:44:06 EST news167056819 Children given an oral syrup containing the naturally occurring sweetener xylitol may be less likely to develop decay in their baby teeth, according to a report in the July issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals. http://www.physorg.com/news166117764.html Medicine & Health Mon, 06 Jul 2009 18:50:01 EST news166117764 The UK spends around £2.5 billion each year on dental materials to replace or strengthen teeth. The Chewing Robot is a new biologically inspired way to test dental materials and it will be shown to the public for the first time at this year's Royal Society Summer Science Exhibition [30 June to 4 July]. http://www.physorg.com/news165564631.html Technology Tue, 30 Jun 2009 07:11:30 EST news165564631 Microscopic analysis of scratches on dinosaur teeth has helped scientists unravel an ancient riddle of what a major group of dinosaurs ate- and exactly how they did it! http://www.physorg.com/news165515308.html Other Sciences Mon, 29 Jun 2009 17:28:50 EST news165515308 In the famed Sharktooth Hill Bone Bed near Bakersfield, Calif., shark teeth as big as a hand and weighing a pound each, intermixed with copious bones from extinct seals and whales, seem to tell of a 15-million-year-old killing ground. http://www.physorg.com/news163682888.html Other Sciences Mon, 08 Jun 2009 12:28:36 EST news163682888 Rushing to salvage fossils from the Panama Canal earthworks, Aldo Rincon, paleontology intern at the Smithsonian Tropical Research Institute, unearthed a set of fossil teeth. Bruce J. MacFadden, curator of vertebrate paleontology at the Florida Museum of Natural History, University of Florida in Gainesville, describes the fossil as Anchitherium clarencei, a three-toed browsing horse, in the May 2009 issue of the Journal of Paleontology. http://www.physorg.com/news163677222.html Other Sciences Mon, 08 Jun 2009 10:54:04 EST news163677222 A new University of Florida study shows mammals change their dietary niches based on climate-driven environmental changes, contradicting a common assumption that species maintain their niches despite global warming. http://www.physorg.com/news163226727.html Other Sciences Wed, 03 Jun 2009 05:47:45 EST news163226727 (PhysOrg.com) -- Ancestors of tapirs and ancient cousins of rhinos living above the Arctic Circle 53 million years ago endured six months of darkness each year in a far milder climate than today that featured lush, swampy forests, according to a new study led by the University of Colorado at Boulder. http://www.physorg.com/news163081573.html Space & Earth Mon, 01 Jun 2009 13:26:49 EST news163081573 Researchers at Eindhoven University of Technology for the first time have shown the earliest stages in biomineralization, the process that leads to the formation of bones, teeth and sea shells. http://www.physorg.com/news161518253.html Nanotechnology Thu, 14 May 2009 11:11:40 EST news161518253 (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 discovered several features in enamel--the outermost tooth tissue--that contribute to the resiliency of human teeth. http://www.physorg.com/news159197196.html Medicine & Health Fri, 17 Apr 2009 14:27:02 EST news159197196 The practice of extracting baby canine teeth to make way for adult canines that are erupting in the wrong place has no evidential basis, according to a new study by Cochrane Researchers. In a systematic review, the researchers were unable to identify a single high quality study to support the practice. http://www.physorg.com/news158994594.html Medicine & Health Wed, 15 Apr 2009 06:10:32 EST news158994594 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 in an effort to reduce these side effects. http://www.physorg.com/news158928022.html Medicine & Health Tue, 14 Apr 2009 11:41:13 EST news158928022 While sipping on sports drinks all day may provide an energy boost, this popular practice is also exposing people to levels of acid that can cause tooth erosion and hypersensitivity, NYU dental researchers have found. http://www.physorg.com/news157981712.html Medicine & Health Fri, 03 Apr 2009 12:48:47 EST news157981712 Australia's consumer regulator has ordered Coca-Cola to publish corrections after it claimed in "unacceptable" ads that health risks from the soft drink were a myth, the watchdog said Thursday. http://www.physorg.com/news157887846.html Medicine & Health Thu, 02 Apr 2009 10:48:24 EST news157887846 It has long been known that red wine causes teeth to stain. But white wine? A recent study by NYU dental researchers found that drinking white wine can also increase the potential for teeth to take on dark stains. http://www.physorg.com/news157816969.html Medicine & Health Wed, 01 Apr 2009 15:03:15 EST news157816969 A new species of tiny fish with jaw structures that look like huge teeth has been identified, Natural History Museum scientists report in the Proceedings of the Royal Society journal today. http://www.physorg.com/news156010047.html Biology Wed, 11 Mar 2009 17:07:57 EST news156010047 Thai monkeys have been observed showing their young how to floss -- proof primates teach offspring to use tools, a Japanese researcher said Wednesday. http://www.physorg.com/news155993011.html Biology Wed, 11 Mar 2009 12:24:06 EST news155993011 With origins dating back over 4,000 years, green tea has long been a popular beverage in Asian culture, and is increasingly gaining popularity in the United States. And while ancient Chinese and Japanese medicine believed green tea consumption could cure disease and heal wounds, recent scientific studies are beginning to establish the potential health benefits of drinking green tea, especially in weight loss, heart health, and cancer prevention. http://www.physorg.com/news155495441.html Medicine & Health Thu, 05 Mar 2009 17:11:30 EST news155495441