The key to better dental health may be to floss, brush and rinse with red wine. That's not quite what scientists at the Spanish National Research Council are recommending. However, M. Victoria Moreno-Arribas and her colleagues believe there is some connection between preventing cavities and drinking red wine. The research team says that the compound known as polyphenols in red wine has been shown to fight bacterial growth, specifically the kind that causes cavities. In a series of lab experiments, polyphenols seemed to block the formation of glucans, which allow bacteria to stick to the mouth. Moreno-Arribas cautions that tests still have to be conducted on humans to determine if red wine can indeed benefit the health of their teeth. A couple of caveats: as those who drink red wine can attest, the drink is known to stain teeth. The Spanish researchers also say that white wine is counter-productive because of its enamel-eroding acid.