Saturday, April 04, 2009

Tea stainer

There's research findings ... and then there are research findings. Latest news from some American dentists is that white wine stains your teeth. Well, actually, their tests were carried out on cow teeth because the surface of cow teeth closely match those of humans. They immersed the teeth for an hour in white wine - to simulate drinking wine with a meal - or water. Then they immersed the teeth in black tea for an hour. The teeth soaked in the wine turned darker than the teeth soaked in the water. So it's probably more accurate to say that exposure to white wine allows chemicals from other food and beverages to penetrate the teeth. Whether it's a fair test to immerse the teeth for an hour in each substance and suggest this replicates drinking substances, and using cow teeth rather than human teeth, to reach their conclusions is open to conjecture.

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