Saber-toothed cats and bear dogs: How they made cohabitation work
(Phys.org)—The fossilized fangs of saber-toothed cats hold clues to how the extinct mammals shared space and food with other large predators 9 million years ago.
Determining toothpaste abrasion
There are various types of toothpaste available on the market. They come as pastes and gels, there are some that guard against tooth decay or protect teeth from acid attack, others that are designed for sensitive ...
Ancient tooth may provide evidence of early human dentistry
Researchers may have uncovered new evidence of ancient dentistry in the form of a 6,500-year-old human jaw bone with a tooth showing traces of beeswax filling, as reported Sep. 19 in the open access journal ...
Coconut oil could combat tooth decay
Digested coconut oil is able to attack the bacteria that cause tooth decay. It is a natural antibiotic that could be incorporated into commercial dental care products, say scientists presenting their work at the Society for ...
From the field: Bush tucker feeds an ancient mystery
(Phys.org) -- As sabre tooth tigers and woolly mammoths were wandering around Europe, unique, giant prehistoric animals were living in Australia three metre tall kangaroos and wombat-like creatures, ...
New technology set to 'revolutionize' the identification of disaster victims
Forensics across the world will be better equipped to identify the age of people who die in natural disasters.
How the pufferfish got its beak
The origin of the unusual beak of pufferfishes has been discovered, giving new clues about how such unique structures can evolve, scientists report today.
Water treatments alone not enough to combat fluorosis in Ethiopia
Increased intake of dietary calcium may be key to addressing widespread dental health problems faced by millions of rural residents in Ethiopia's remote, poverty-stricken Main Rift Valley, according to a new Duke University-led ...
Many meat-eating mammals lack sweet tooth, study finds
For all their sharp teeth, many meat-eating mammals lack a sweet tooth, a genetic analysis of a dozen species has shown.
Ancient whale species sheds new light on its modern relatives
Beluga whales and narwhals live solely in the cold waters of the Arctic and sub-arctic. Smithsonian scientists, however, found that this may not have always been the case. They recently described a new species ...
Scientists use physical experiments, computer modelling to explore efficiency of bladed tooth shape
Using a combination of guillotine-based experiments and cutting-edge computer modelling, researchers at the University of Bristol have explored the most efficient ways for teeth to slice food. Their results, ...
Mighty mesh: Extracellular matrix identified as source of spreading in biofilms
New research at Harvard explains how bacterial biofilms expand to form slimy mats on teeth, pipes, surgical instruments, and crops.
Nanocrystals make dentures shine
German chemists succeeded in producing a new kind of glass-ceramic with a nanocrystalline structure, which seems to be well suited to be used in dentistry due to their high strength and its optical characteristics. ...
Scientists answer how bacteria fight toxic flouride
Yale researchers have uncovered the molecular tricks used by bacteria to fight the effects of fluoride, which is commonly used in toothpaste and mouthwash to combat tooth decay.