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Article: White wine can also make tooth stains darker: U.S. study
- Article from:
- Xinhua News Agency
- Article date:
- April 1, 2009
CopyrightCopyright 2009 Xinhua News Agency. Provided by ProQuest LLC. (Hide copyright information)
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White wine can also make tooth stains darker: U.S. study
WASHINGTON, April 1 (Xinhua) -- It has long been known that red
wine causes teeth to stain. However, a recent study by New York
University dental researchers found that drinking white wine can
also increase the potential for teeth to take on dark stains.
The researchers compared two sets of six cow teeth, whose surface
closely resembles that of human teeth, and used a spectrophotometer,
an instrument that measures color intensities, to evaluate staining
levels.
They found that teeth soaked for one hour in white wine before
being immersed in black tea had significantly darker stains than