Green Tea Polyphenols Combat Plaque
Participants: 150 volunteers
Study description: The study was designed
to test the plaque-reducing effects of a tablet containing green tea
polyphenols.
Where: China
Type of study: Randomized controlled
trial
Study methods: The volunteers
were divided into three groups of 50 each.
- Group A was given a polyphenol tablet three times a day for 3
weeks, then a placebo tablet three times a day for the next 3 weeks.
- Group B was given a polyphenol tablet 3 times a day for 6 weeks.
- Group C (control group) was given a placebo tablet three times a
day for 6 weeks.
What happened: After 2 weeks, the plaque
index (buildup of plaque on the teeth) in the groups taking the green tea polyphenol tablet was lower than it was in the
control group. This effect continued for an additional 3 weeks after use of the polyphenol tablet
was stopped.
Researchers' conclusion: "It can be concluded
that polyphenol tablet from Chinese green tea has evident anti-plaque effect."
Citation: Liu T, Chi Y. Experimental study on
polyphenol anti-plaque effect in humans. Zhonghua Kou Qiang Yi Xue Za Zhi
2000;35(5):383-4. (Click here to read PubMed study
abstract.)
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Nadine Taylor, M.S., R.D. presents
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