Artificial Tooth Enamel

AFP: Scientists in Japan have created a microscopically thin film that can coat individual teeth to prevent decay or to make them appear whiter, the chief researcher said. The “tooth patch” is a hard-wearing and ultra-flexible material made from hydroxyapatite, the main mineral in tooth enamel, that could also mean an end to sensitive teeth. […]

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The Battle for Whiter Teeth

WSJ: Dingy teeth were once relatively common. But after a 1989 scientific article touted the use of low levels of hydrogen peroxide, pressed against teeth, to improve smiles, companies began producing whitening products and dentists began hawking them. Entrepreneurs jumped in quickly. The Food and Drug Administration classifies teeth-whitening products as cosmetics, and drugstores were

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