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Search results for dentin

Archaeology Jun 7, 2018

A human fossil species in western Europe could be close to a million years old

First direct dating of an early human tooth confirms the antiquity of Homo antecessor, western Europe's oldest known human fossil species.

Materials Science Jun 1, 2018

Scientists develop material that could regenerate dental enamel

Researchers at Queen Mary University of London have developed a new way to grow mineralised materials which could regenerate hard tissues such as dental enamel and bone.

Archaeology Feb 20, 2018

First 3-D morphometric study of the molars of Sima de los Huesos

The Dental Anthropology Group of CENIEH has just published a paper in American Journal of Âé¶¹ÒùÔºical Anthropology on the morphological analysis of the dentin in the lower molars of the population of the archaeological site ...

Archaeology Nov 20, 2017

Ancient fish scales and vertebrate teeth share an embryonic origin

In biology, one long-running debate has teeth: whether ancient fish scales moved into the mouth with the origin of jaws, or if the tooth had its own evolutionary inception.

Analytical Chemistry Nov 7, 2017

Science meets archaeology with discovery that dental X-rays reveal Vitamin D deficiency

Human teeth hold vital information about Vitamin D deficiency, a serious but often hidden condition that can now be identified by a simple dental X-ray, McMaster anthropologists Lori D'Ortenzio and Megan Brickley have found.

Plants & Animals Oct 18, 2017

Researchers report toothy findings in odontode-bearing catfish study

Certain species of catfish are covered with bony plates bristling with thin teeth, similar to extinct vertebrate lineages. These teeth, which regularly fall out and grow back, are used for defense and, in males, to attract ...

Archaeology Sep 27, 2017

Isotopic analyses link the lives of Late Neolithic individuals to burial location in Spain

An isotopic analysis of megalithic graves and caves in Spain may suggest the existence of a degree of differentiation in the lifeways of people buried in these different funerary sites, according to a study published September ...

Archaeology Sep 14, 2017

Ancient amphibian had mouthful of teeth

The idea of being bitten by a nearly toothless modern frog or salamander sounds laughable, but their ancient ancestors had a full array of teeth, large fangs and thousands of tiny hook-like structures called denticles ...

Archaeology Aug 24, 2017

The first hard evidence for the 'outside-in' theory of the origin of teeth

Researchers studying a 400 million year old bony fish from Estonia believe that they have found evidence for the origins of teeth. Using advanced synchrotron microtomography on numerous specimens representing different ages ...

Ecology Aug 14, 2017

Fighting ivory trafficking with forensic science

Two weeks ago, Kevin Uno was on a field expedition in Kenya when he got a message he'd been hoping for: the NY Department of Environmental Conservation had officially approved his request to sample some ivory that had been ...

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