February, 2015

Beavers show way to toughen tooth enamel

Northwestern University researchers found that the pigmented enamel of beavers, which contains iron, is both harder and more resistant to acid than regular enamel, including that treated with fluoride. (Credit: Michael Graydon, Toronto)

A new Northwestern University study reports beavers do have protection against tooth decay built into the chemical structure of their teeth: iron. This pigmented enamel, the researchers found, is both harder and more resistant to acid than regular enamel, including that treated […]