Polishing Teeth With Silica Nanoparticles Keeps The Dentist Away

December 23 2008 / by John Heylin
Category: Gadgets   Year: 2012   Rating: 2

teeth.jpg

Researchers at Clarkson University have discovered a way to protect teeth from tooth decay by polishing the surface with silica nanoparticles.  The teeth are polished so smooth that harmful bacteria, the leading cause of tooth enamel decay, are unable to attach to the surface.  "Roughness left on the tooth after the polishing is just a few nanometers, which is one-billionth of a meter or about 100,000 times smaller than a grain of sand."  Even if bacteria manage to get a hold of the surface, a simple brushing will brush them off fairly quickly.  The polishing method is taken from the method developed to polish semiconductors.

Story via Science Daily, image via Gizmodo

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