Page 12 THE BATTALION
WEDNESDAY, NOVEMBER 16, 1977
Can gum chewing fight cavities?
United Press International
CHICAGO — Dental researchers
are trying to see if chewing gum, a
villain in many cases of tooth decay,
can turn into a cavity fighter with
the help of a new sweetner.
Researchers at Loyola Univer
sity’s school of preventive dentistry
are testing a theory that the
sweetener, xylitol, actually cuts the
number of decay-producing bacteria
in the mouth. The research is un
derwritten by William Wrigley Co.,
producers of Wrigley’s gum.
Dr. Kirk Hoerman, a dentist who
heads the school, said interest in
xylitol-sweetened gum was
prompted by a 1974 Finnish study
which indicated that people who
chewed xylitol gum four times a day
had a significant reduction in
cavities.
Initial reports from the Loyola
study, Hoerman said, “did not see
any effect of xylitol that was as as
tounding” as in the Finnish re
search. But he said some
encouragement was noted.
Whatever the final outcome of the
study, Hoerman said, it is important
that xylitol alone not be regarded as
a cure for cavities.
The important thing right now is
to minimize what could be a high
expectation among the public, par
ticularly mothers and children, that
xylitol is a miracle, a cure for holes
in teeth. It is not a cure for that, ” he
said.
Hoerman’s study includes three
g r oups of dental students, who chew
seven sticks of gum a day for 10
weeks. One group chews gum
sweetened 100 percent with xylitol,
another gum with sugar sweetening
and the third given a gum base with
flavoring but no sweetner.
Researchers take samples of
transparent film called plaque from
the students teeth each week and
count the number of bacteria, in
cluding streptococcus mutants
which are known to cause tooth de
cay.
“Initially it looks like the count of
streptococci in plaque from xylitol
chewers are less than in individuals
chewing gum containing sugar,”
Hoerman said.
But he said it is too early to tell
whether xylitol is actually reducing
the streptococcus count.
Xylitol is a chemical which occurs
naturally in berries, some fruits,
tree leaves and bark and mush
rooms. It also is produced naturally
in some animal tissues and in the
human body.
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