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Tooth in Biological News

Healing power of aloe vera proves beneficial for teeth and gums, too

... gained some popularity as an active ingredient in tooth gel. Similar to its use on skin, the aloe vera in tooth gels is used to cleanse and soothe teeth and ... clinical, peer-reviewed journal. Aloe vera tooth gel is intended to perform the same function as ...

OJ worse for teeth than whitening says Eastman Institute researchers

... out to learn if there are negative effects on the tooth from using whitening products. Eastman ... decreased hardness and increased roughness of tooth enamel. Unlike ever before, researchers were ... microscope. "The acid is so strong that the tooth is literally washed away," said Ren, whose ...

True grit

... another amazing structural feature of sea urchin tooth design. They found that all the crystalline elements that make up the tooth are aligned in two different arrays, and that ... fingers of folded hands, just at the tip of the tooth where most of the wear occurs. The scientists ...

Home tooth bleaching slightly reduces enamel strength

... of human teeth and compared the effects to tooth samples that received no treatment. In all cases, ... or stiffness, a measure of the ability of the tooth surface to bounce back in response to applied force. Many studies have sought to determine how tooth whitening ...

Teeth of Columbus' crew flesh out tale of new world discovery

... leader of the team conducting an analysis of the tooth enamel of three individuals from a larger group ... carbon isotope ratio profiles locked in their tooth enamel. "Heavy carbon means you were eating ... and animals. The strontium isotopes found in tooth enamel, the most stable and durable material in ...

Scientists discover why teeth form in a single row

... one gene caused the activation of a complete tooth developmental program outside of the normal tooth row in those mice. Finding out how the extra teeth developed will reveal how nature makes a tooth from scratch, which will ...

Modern lifestyle prevents tooth decay

... a bigger role than food alone, when it comes to tooth decay. A review of the scientific evidence ... may override the effects of food alone on tooth decay. The research is published online in a ... to just look at what we eat when talking about tooth decay, as other factors seem to be as important. ...

Toothsome research: Deducing the diet of a prehistoric hominid

... Lucas came in handy. Driven by an interest in tooth restoration materials, they had been studying ... this enables us to determine trends for different tooth sizes, different food sizes, different food ... the most important part of the survival of the tooth is wear, but its now becoming evident that the ...

Little teeth suggest big jump in primate timeline

... managed to find and remove the tiny Anthrasimias tooth specimens from a strata in the mine while "really ... Foundation. Their PNAS report describes tooth structure differences that would separate ... upper molars and one lower molar. "From the tooth size and structure we can say something about the ...

End in sight for the dreaded dentist drill

... A new technology that spots tooth decay almost as soon as it's begun promises to ... by pointing a tiny optical fibre at the tooth to check on its health. A preliminary study at ... developed, found that chemical changes in the tooth could be detected by analysing how light is ...

Tooth loss strongly linked to risk of esophageal, head and neck, and lung cancer

... researchers have found a strong link between tooth loss and increased risk of three cancers ... resulting from poor oral care that leads to tooth loss could also be driving development of these ... to increase risk for stroke and heart disease. tooth loss is a common consequence of chronic bacterial ...

Shell-breaking crabs lived 20 million years earlier than thought

... claws, this ancient crab also sported a curved tooth on the movable finger of the larger right claw. ... prey into position. Also, the curved tooth increased the power of the claw. Dietl hopes ... to search for similar examples of these curved tooth structures from the Late Cretaceous period, just ...

Tooth Bank seeks milk teeth from 100,000 children

... The Norwegian tooth Bank is requesting milk teeth from 100 000 children in Norway and could become the biggest tooth bank in the world. Milk teeth can give unique ... in the foetus and in early childhood. The tooth Bank is a sub-project in the Norwegian Mother and ...

American Chemical Society's Weekly PressPac -- Nov. 14, 2007

... magnolia: Tree bark extract fights bad breath and tooth decay Journal of Agricultural and Food ... kill most oral bacteria that cause bad breath and tooth decay within 30 minutes. The extract could be a ... from ideal, with some having side effects like tooth staining. In the new study, Minmin Tian and ...

CU-Boulder study shows 53 million-year-old high Arctic mammals wintered in darkness

... signatures of carbon from enamel layers that form sequentially during tooth eruption allowed the team to pinpoint the types of plant materials ... said. "We were able to use carbon signatures preserved in the tooth enamel to show that these mammals did not migrate or hibernate," said ...

Newly discovered reactions from an old drug may lead to new antibiotics

... a new line of antibiotics for bacteria that commonly cause diarrhea, tooth decay and, in some severe cases, death. The trace mineral selenium is ... already established that stannous salts are more effective at preventing tooth decay and inhibiting growth of T. denticola, but the mechanism of this ...

Tufts University professor receives IADR Pharmacology/Therapeutics/Toxicology Award

... flow, and understanding why patients with dry mouth are susceptible to tooth decay. She has spearheaded numerous other areas of therapeutic research that have included studies on tooth sensitivity, effects of implants in restoring nutrition in the elderly, ...

Childhood chicken pox could affect oral health years later

... the jaw bone suffers severe damage and/or death, eventually leading to tooth loss. While the exact reason for tooth loss is unknown, it has been noted that restricted blood flow and ...

February 2009 Geology and GSA Today media highlights

... support for the Snowball Earth hypothesis; what nine-million-year-old tooth enamel says about vegetation in an ancient sub-Himalayan ecosystem; ... use stable carbon isotope ratios measured in 9-million-year-old mammalian tooth enamel from northern Pakistan to reveal how the landscape and vegetation ...

Early humans had 'jaws of steel'

... with another specimen with teeth to make the virtual model of the bone and tooth structure. "Then we looked at chimpanzees, who share common features ... diet," said Spencer. "The enlargement of the premolars, the heavy tooth enamel and the evidence now that they were loading forcefully on the ...

Tom Cruise smile comes with a sunburn price

... UV light-enhanced tooth bleaching is not only a con, but is dangerous to your eyes and skin, says ... These grooves make the teeth more vulnerable to mechanical stress. tooth bleaching is one of the most popular cosmetic dental treatments available. ...

Girls have superior sense of taste to boys

... and do not think of themselves as being fussy eaters. Boys have a sweeter tooth than girls. And teenagers taste differently. The findings of the world's ... hand, tend to like the more extreme flavours. Boys also have a sweeter tooth than girls most of the boys preferred the super sweet soft drink variety. ...

Drink brewed tea to avoid tooth erosion

... These refined sugars and acids found in soda and citrus juice promote tooth erosion, which wears away the hard part of the teeth, or the enamel. Once tooth enamel is lost, it's gone forever. There is a beverage that does not ...

Pitt researchers use fluorescence to develop method for detecting mercury in fish

... researchers also tested for mercury leaching from dental amalgam, a common tooth filling composed primarily of mercury mixed with smaller amounts of other ... in the United States). To test for leaching, the team pressed a cloth to a tooth with an amalgam filling for one minute; the sample glowed when exposed to ...

Eastman Dental Center awarded $1.6 million to find ways to prevent cavities

... polymers, using sucrose to help them, and other pathogens, to cling to tooth surfaces, forming biofilms, known as dental plaque. Basically, once the bacteria are firmly attached on the tooth surface, it creates cavities by eating sugars and then excreting acids ...

October 2008 GEOLOGY and GSA TODAY media highlights

... scavenging by bismuth melts coexisting with hydrothermal fluids Blake tooth et al., Geology and Geophysics, School of Earth and Environmental ... metallic melts are observed in many magmatic-hydrothermal gold deposits. tooth et al. illustrate the importance of this additional liquid phase during ...

USC researchers identify alternate pathway that leads to palate development

... baby. Growth factors responsible for development, including palate and tooth formation, have more than one way to direct cells to make changes, says ... of the main signaling molecules used in the TGF- pathway during palate and tooth development. Chai says his team had initially hypothesized that since ...

NYU dental professor discovers biological clock linking tooth growth to other metabolic processes

... Bromage discovered the rhythm while observing incremental growth lines in tooth enamel, which appear much like the annual rings on a tree. He also ... Bromage said, The same biological rhythm that controls incremental tooth and bone growth also affects bone and body size and many metabolic ...

Study confirms that low-calorie sweeteners are helpful in weight control

... studies. The present study went backwards. Some have blamed sweet tooth and sugar calories for rising obesity rates. Others now blame sweet tooth and the absence of sugar calories for rising obesity rates. The human ...

Dinosaur from Sahara ate like a 'mesozoic cow'

... took its place. There were more than 500 teeth in total, with a new tooth in each column joining the scissors edge every month. Among dinosaurs, Sereno said, Nigersaurus sets the Guinness record for tooth replacement. Sereno and coauthors write in PLoS ONE that Nigersaurus ...

Analysis of Copernicus putative remains support identity

... profile as the putative remains of Copernicus", says Marie Allen, researcher at Uppsala University. The Uppsala researchers also made tests of a tooth as well as bone tissue from the putative remains of Copernicus. Results from the analysis of the remains from the Institute of Forensic Research in ...

Structural biology scores with protein snapshot

... may be a therapeutic target for certain types of bacterial infections. It is a virulence factor in the bacteria Streptococcus mutans, which causes tooth decay. Sanders selected DAGK as a model for studying membrane enzymes when he started his own research lab 17 years ago. DAGK is the smallest known ...

Is vitamin D deficiency linked to Alzheimer's disease and vascular dementia?

... with higher serum 25(OH)D levels had greatly reduced risk of incidence or death from cardiovascular diseases. Several studies have correlated tooth loss with development of cognitive impairment and Alzheimer's disease or vascular dementia. There are two primary ways that people lose teeth: dental ...

A combined tooth-venom arsenal revealed as key to Komodo dragon's hunting strategy

... them, leaving the prey to bleed to death from the horrific wounds inflicted. We have now shown that it is the combined arsenal of the Komodo Dragon's tooth and venom that account for their hunting prowess," said Dr Fry from the Department of Biochemistry and Molecular Biology, Bio21 Institute at the ...

Genital stimulation opens door for cryptic female choice in tsetse flies

... and so on. With Daniel Briceo, professor of biology at the University of Costa Rica, Eberhard modified male genital structures by cutting off a tooth that is typical of this species of tsetse fly and by smoothing a bristly surface by applying a coat of nail polish. In addition, they modified the ...

Sugar on bacteria surface serves as base for a web of resistance

... beyond medicine. Fortified by the moist environment, plentiful nutrients and easy access to the human mouth, biofilms are also responsible for tooth decay. These microcolonies, when they are able to contact water or soil, also attach to certain industrial surfaces, causing corrosion and other ...

April 2009 Geology and GSA Today media highlights

... and habitat preferences were impacted by climate change and, in turn, how these ecological changes correlate with diversity patterns for this region. tooth enamel was sampled by Clementz et al. from 57 specimens of sirenians from the Tethys-Mediterranean and adjacent seas spanning the Eocene to Pliocene. ...

Dr. King receives IADR Craniofacial Biology Research Award

... of investigations in basic science and some clinical areas related to craniofacial biology, with a primary interest in bone biology and orthodontic tooth movement. He has more than 90 publications to his credit and has served on myriad committees at national and international levels. Supported by ...

Scientists uncover evolutionary keys to common birth disorders

... the human MSX1 gene in two different birth disorders: either cleft lip and palate or skin derivative disorders ('ectodermal dysplasias') that include tooth and nail malformations. The mutations associated with the more severe clefting disorder are found within unique portions of the MSX protein, thus ...

Vitamin D a key player in overall health of several body organs, says UC Riverside biochemist

... and two-thirds of the rest of the world are not getting enough vitamin D to maintain healthy bone density, lower their risks for fracture and improve tooth attachment. "There needs to be a sea change by various governmental agencies in terms of the advice they present to citizens about how much ...
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(Date:7/29/2014)... in locomotion. Swimming microorganisms, such as bacteria and spermatozoa, ... the viscous forces exerted by the surrounding fluid. ... scientists have found that the direction of propulsion made ... by a viscoelastic fluid. These findings have been published ... the Alternative Energies and Atomic Energy Commission (CEA), in ...
(Date:7/29/2014)... the Northern Territories in Canada and have sent smoke ... continue on. NASA,s Aqua satellite collected this natural-color ... on July 26, 2014. Actively burning areas, detected by ... of smoke are drifting northward in this image. ... Fire has caused power outages in the area ...
(Date:7/29/2014)... from scientists at the University of Kent has shown ... are regulated a breakthrough that could have a ... from Kent,s School of Biosciences uncovered the mechanism whereby ... known as actin filaments are ,fine-tuned, to ... filaments appear to completely stable, providing a framework for ...
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(Date:7/29/2014)... For survivors of severe combat injuries threatening more than ... a good record of safety and effectiveness in avoiding ... Plastic and Reconstructive Surgery , the ... Plastic Surgeons (ASPS). , Experience with multiple limb ... shows good success rates, with no increase in complications ...
(Date:7/29/2014)... July 29, 2014 (HealthDay News) -- Chlorine helps keep ... more likely to develop eye infections, doctors say. ... as well as blurry vision, said Dr. Sampson Davis, ... in New Jersey. It,s important to understand why ... washes away the outer film layer of the eye ...
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