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Tag: "enamel" at biology news

Researchers find first evidence of venom system in extinct mammal

...fact that the walls of the groove are covered with enamel indicates the groove is not a product of post-mortem exposure and splitting but rather is the natural design of the tooth. "The groove in these teeth would have acted as a gutter, conducting fluid from its source in glandular tissues in the upper jaw...

Neanderthal teeth grew no faster than comparable modern humans'

...authors in the study. "Based on our study of the enamel of these Neanderthal teeth and other modern ones, ...tside of teeth that mark the incremental growth of enamel on a young tooth. Like tree rings that can gauge the age of a redwood, these striations ?called peri...

New tooth enamel dating technique could help identify disaster victims

...bout 1.6 years. "Unlike most other tissue, dental enamel doesn't turn over," said Bruce Buchholz of LLNL's ...enter for Accelerator Mass Spectrometry, where the enamel samples were analyzed. "Whatever carbon gets laid down in enamel during tooth formation stays there...

Tetracycline plus teeth equal gray smile

...tero, the drug becomes calcified in the dental and enamel of the child's teeth and creates a permanent dark ... for a one-hour tooth whitening session, where the enamel is painted with the whitening solution and "cured" under a UV light. Then, for every night for three...

A buffet for early human relatives

...n carbon-12. "The previous way to sample tooth enamel was to take a dental drill with a diamond-impregna... used "laser ablation" to remove and analyze tooth enamel samples from the large, fossilized teeth of prehistoric horses, rhinos and elephants to determine th...

Scientists re-grow dental enamel from cultured cells

Dental enamel is the hardest tissue produced by the body. It can...st by the time the tooth appears in the mouth. The enamel spends the remainder of its lifetime vulnerable to wear, damage, and decay. For this reason, it is e...

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