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Tag: "dental" at biology news

Using dental X-rays to detect osteoporosis

...patients at risk of osteoporosis by using ordinary dental x-rays. Professor Paul F. van der Stelt and his te...d approach to detecting osteoporosis using routine dental x-rays, by automatically analyzing specific characteristics of the radiographic trabecular bone patt...

'Ancestral eve' was mother of all tooth decay

... 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 Africa between 100,000 and 200,000 years ago. S. mutans is transmitted from mothers to infants, and first appears in ...

Bacteria from patient's dental plaque causes ventilator-associated pneumonia

... Ironically, it turns out that the patient’s own dental plaque is a major source of germs that cause venti...Medicine show that the same bacteria identified in dental plaque of patients when they were admitted to the ICU and placed on ventilators were found later in ...

Scientists re-grow dental enamel from cultured cells

...cell line). This crucial step boosts the number of dental epithelial cells available for enamel production. ...eported today, the researchers seeded the cultured dental epithelial cells onto collagen sponge scaffolds, along with cells from the middle of the tooth (dent...

A buffet for early human relatives

... previous way to sample tooth enamel was to take a dental drill with a diamond-impregnated bit and basically grind away at the tooth, collect the powder and then analyze that," Passey says. In the past decade, researchers including Cerling have used "laser ablation" to remove and analyze tooth enamel sa...

Researchers give name to ancient mystery creature

... There's no mistaking it," Scott said. The first dental specimens of the creature were unearthed by University of Alberta paleontologists 30 years ago from the banks of the Blindman River in Alberta, Canada. About 10 years ago, more teeth were discovered at a dig site near Drayton Valley and on the banks ...

Finding the right mix: A biomaterial blend library

From dental implants to hip replacements, biomaterials have become big business. But scientists pursuing this modern medical revolution share a basic challenge: biocompatibility. How will a biomaterial on the lab bench actually work inside the human body? Will a...

Nanotechnology being used to improve biocompatibility of human prosthetics and implants

...mplants are proving their worth in orthopaedic and dental applications. The most promising form of CP are hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , HA) coatings used to promote rapid bone remodelling on the titanium alloy implants. It is well known that the microstructure of these coatings significantly in...

Protein-coated dental implants could improve bone regeneration

Titanium dental implants coated with proteins that induce bone for...rant from Nobel Biocare, a leading manufacturer of dental implants and equipment. Finding the key to improved regeneration is like piecing together a puzzle...

Ultrasound may help regrow teeth

...rst time scientists have been able to reform human dental tissue. Using low-intensity pulsed ultrasound (LI...invasive and novel way to stimulate jaw growth and dental tissue healing. "It's very exciting because we have shown the results and actually have something y...

Tetracycline plus teeth equal gray smile

... stains and saved his patient more than $10,000 in dental restorative fees. He'll share this information dur...t attend this course will offer them the latest in dental health technology, knowledge and treatment. Tetracycline is a powerful antibiotic that kills a wi...

Secrets of the sea yield stronger artificial bone

...ich strength and lightness are imperative, such as dental implants, airplane manufacturing and computer hardware. As reported in the January 27, 2006 edition of the journal Science, the Berkeley Lab scientists developed a composite that mirrors the intricate structure of nacre, which is a finely layered su...

Bioactive cement scaffold may improve bone grafts

... Foundation have conducted cooperative research on dental and medical materials since 1928. ADAF researchers focus on development of new dental materials, while NIST specializes in the development of improved technologies and methods for measur...

Typhoid fever led to the fall of Athens

...amplification techniques, Papagigorakis et al used dental pulp to identify DNA sequences similar to those of the modern day Salmonella enterica serovar Typhi, the organism that causes typhoid fever. The results of this study point to typhoid fever as the probable cause of the Plague of Athens. Typhoid fev...

Anti-cancer drugs may hold promise for premature aging disorder

...rch Scholars Program gives outstanding medical and dental students the opportunity to conduct biomedical research under the direct mentorship of senior NIH research scientists. ...

'Nanospheres' that block pain of sensitive teeth

...e only way to treat this condition is through good dental hygiene - using special toothpastes and fluorine m...and so is widely used by medics for bone grafts or dental coatings (because it binds strongly with the bone material). Earl and his colleagues grew hydroxyap...

Give thanks for the cranberry, say dental researchers

...e bacteria-busting ability of cranberry juice, say dental researchers who have discovered that the beverage ... eating sugars and then excreting acids that cause dental decay. "Scientists believe that one of the main ways that cranberries prevent urinary tract infecti...

New technology shows our ancestors ate…everything!

... School of Medicine. The new approach to studying dental microwear, the microscopic pits and scratches on the tooth surface caused by use, offers a more accurate measurement of the surface's appearance and is described in the August 4 issue of Nature. "Paleontologists and physical anthropologists have had...

Fluoride poisoning in China due to clay, not coal

...on Chinese people, mainly in rural areas, suffered dental fluorosis and nearly 1.5 million had the skeletal ... is most serious, there were 10.5 million cases of dental fluorosis and just over half a million cases of skeletal fluorosis in 2001. Reference: Chinese Jour...

New tooth enamel dating technique could help identify disaster victims

...ithin about 1.6 years. "Unlike most other tissue, dental enamel doesn't turn over," said Bruce Buchholz of LLNL's Center for Accelerator Mass Spectrometry, where the enamel samples were analyzed. "Whatever carbon gets laid down in enamel during tooth formation stays there, so tooth enamel is a very good c...

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