Tag: "tooth" at biology news
Study offers clues to 'Broken Heart Syndrome'
..., ranging from armed robbery to a heated argument, tooth
extraction, or preparation for a colonoscopy. "We don't know why some women develop this syndrome after what appears to be minimal stress, while other women experience severely stressful events but don't develop Takotsubo cardiomyopathy," Dr. Reg...
From the deep -- Researchers find new species of sea anemone
...t the size of a human molar, and even looks like a tooth
with small tentacles on one side. Daly and Luciana Gusmão, a doctoral student in Daly's laboratory, describe A. pearseae in detail in a recent issue of the Journal of Natural History. The two assigned the anemone to the genus Anthosactis primarily...
Ancient amphibians evolved a bite before migrating to dry land
...ate. Living fish exhibit an incredible array of tooth
and jaw shapes, suggesting that, ironically, direct analysis of fossil jaws would be a less precise means of determining the feeding methods of extinct species, Markey says. "Analysis of the sutures of the early amphibian species Acanthostega rev...
Xylitol reduces risk of cavities
...logy of the oral cavity and its role in preventing tooth
decay (caries). In a series of studies on childre...nded as a supplement for patients at high risk for tooth
decay. Xylitol products that actively stimulate the secretion of saliva should be the first choic...
Scientists re-grow dental enamel from cultured cells
...d by a layer of cells that is lost by the time the tooth
appears in the mouth. The enamel spends the remain...scaffolds, along with cells from the middle of the tooth
(dental mesenchymal cells). The scaffolds were then transferred into the abdominal cavities of rats,...
A buffet for early human relatives
...tubers and perhaps grazing animals. "By analyzing tooth
enamel, we found that they ate lots of different t... common carbon-12. "The previous way to sample tooth
enamel was to take a dental drill with a diamond-impregnated bit and basically grind away at the too...
Artificial cornea offers better results for infants, some blind patients
...ay, physicians enshroud the implant in a patient's tooth
socket, stash the mix in the patient's cheek for a few months to encourage the growth of new tissue ?all in an effort to help a patient's body accept the new device?and then implant the whole structure in the patient's eye Traditional corneas stil...
Researchers give name to ancient mystery creature
... of small mammals. Based on careful examination of tooth
and jaw fragments that have been unearthed over the past 30 years, the University of Alberta researchers have now determined Horolodectes was a small fur-bearing animal that measured 10 centimetres in length and due to its powerful jaws, likely had a...
Report focuses on the role good microbes play in future medicine
...and inflammatory bowel disease, oral diseases like tooth
decay and periodontal disease, and various other infections, including vaginal infections and possibly skin infections. Probiotics could also conceivably be put to use in preventing disease or thwarting autoimmune disorders. A number of these possi...
Protein-coated dental implants could improve bone regeneration
...one formation may be a key advancement in treating tooth
loss due to gum disease, researchers say. In lab...e in place, regeneration of the tissues around the tooth
may occur within a week or two," he says. "After that, it's a matter of the wound maturing ?going t...
Friendly bacteria in chewing gum that bites back
...teria that can destroy the bad bacteria that cause tooth
decay could be in the shops soon reports Marina Mu...trepptococcus mutans, the bacteria responsible for tooth
decay. S. Mutans sticks to the surface of teeth, where it produces an aggressive acid that breaks do...
First human study confirms that immune cells can be a primary cause of bone loss in gum disease
...ts in soft tissue and bone destruction, leading to tooth
loss. Dr. Kawai and his colleagues had found that B cells (B and T lymphocytes are immune cells) can contribute to increased periodontal bone loss coordinating with activated T-cells. Both cell types had previously been found to manifest a host imm...
Ultrasound may help regrow teeth
...egrow the teeth root, a patient could have his own tooth
rather than foreign objects in his mouth." The device is aimed at those experiencing dental root resorption, a common effect of mechanical or chemical injury to dental tissue caused by diseases and endocrine disturbances. Mechanical injury from wea...
Tetracycline plus teeth equal gray smile
..., AGD member and clinician, will explain how a new tooth
whitening procedure he used on a patient helped si...thout the costly procedures. Dr. Capehart's new tooth
whitening treatment protocol involves placing the patient on a prescription dose of fluoride toothpa...
Birds that make teeth
...n of chicken harbors a genetic change that permits tooth
formation in both the upper and lower jaw of embryonic birds. These teeth show similar developmental position as mammalian teeth and are associated with similar molecular instructions. Furthermore, when comparing the initial development of the struct...
'Banana-jawed' fossil mammal linked to rare sound-producing skill
... In order to gain answers, the Duke team measured tooth
samples from the newly available fossils. "We looked first at molar teeth, which are used for grinding food, and found that all of them in our specimens were identical, so we were pretty sure they were from the same species," DeBlieux said. "But onl...
Bacteria that cause tooth decay able to survive without important biochemical pathway
Leave it to the bacteria that cause tooth
decay to be able to live without something all cel...icult for other helpful bacteria and demineralizes tooth
enamel, causing decay. According to the U.S. Centers for Disease Control and Prevention, 95 percent...
Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies
... pins and rods, pacemaker electrodes, and titanium tooth
implants. "The results of our study may have broader implications for other diseases in which implantable medical devices may be used to deliver gene therapy," said Dr. Levy. Dr. Levy's co-authors included Ilia Fishbein, M.D., Ivan S. Alferiev, M.D....
Ancient anthropoid origins discovered in Africa
...es whose mouths they once occupied. For example, a tooth
root from the species Biretia megalopsis is truncated, indicating that it had to make room for the larger eyesocket of a nocturnal animal. "These finds seem to indicate that Biretia megalopsis must have had very large eyes, and so was likely nocturn...
'Nanospheres' that block pain of sensitive teeth
...is a condition that arises when the dentine of the tooth
is exposed. The dentine is made up of thousands of tiny fluid-filled channels which radiate outwards from the nerve endings at the centre of the tooth. Heat, some chemicals, and physical contact can cause the fluid in these channels to move ?in or ou...