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Researchers say polyphenols in red wine can help prevent certain bacteria from sticking to your teeth.

Now, researchers say they have uncovered more benefits of the extracts in red wine. They may, in fact, be good for your teeth.

But before you grab that bottle of burgundy, take a closer look at the science. A new study has concluded that red wine polyphenols, as well as red wine and grape seed extracts, may lower the ability of bad bacteria to stick to teeth. These bacteria can cause plaque, cavities, and gum disease.

Using antiseptics and antibiotics to treat those conditions can cause unwanted effects, so M. Victoria Moreno-Arribas, a researcher with the Spanish National Research Council in Madrid, wanted to study other options. She’s researched oral health and the gut microbiome before.

Moreno-Arribas looked at the impacts of two red wine polyphenols — caffeic and p-Coumaric acids — as well as commercially available grape seed and red wine extracts.

She wanted to see how they affected the bacteria that adhere to teeth. The study was conducted in an in vitro model — not on animals or humans.

“We tested concentrations in the range normally found in wine,” she explained.

Basically, our mouth has a protective biofilm that can safeguard it from harmful bacteria. But some bacteria stick to it and can penetrate the film, infecting our teeth and gums.

This is how you get cavities and other oral ailments. Read further on Healthline.com