Now here is a good article to give to your dentist: 
RED WINE: THE SECRET OF A BETTER SMILE?
Third Age Health
Forget apples or mouthwash -- a glass of Bordeaux
may be the best thing for your teeth.
Scientists have found that certain compounds in
red wine could play a role in preventing gum
disease and tooth loss. The findings were presented
at the annual meeting of the American Association
for Dental Research in Orlando, Fla., recently.
Researchers from Laval University in Quebec, Canada,
studied the effect of extracts from Bordeaux wines
on different types of periodontal diseases, which
affect the gums and bone around the teeth.
Periodontitis affects more than two-thirds of
adults over 50 and one in seven people aged between
21 and 50. The diseases can often lead to tooth loss
if left untreated.
The scientists looked at polyphenols, compounds that
are found in the skin and seeds of grapes. When wine
is made from grapes, the alcohol produced by the
fermentation process dissolves the polyphenols.
White wine does not contain as many polyphenols
because the production process involves removing
the skins after the grapes have been crushed.
When extracts of Bordeaux wine were used to treat
periodontal bacteria in laboratory conditions,
the Quebec scientists found that the polyphenols had
a "significant inhibitory" effect on the growth of
the bacteria. They concluded that the compounds
could help to prevent the spread of gum diseases.
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