Xylitol: All-Natural Assault on your Mouth's Icky Villains! Bring it, evil bacteria. We own you. Why yes! Yes you may reduce your risk of tooth decay! Well played! Simply use more xylitol gum. One piece of Epic gum contains 1.06 grams of xylitol. That's more than anybody. That means cavities DO NOT want to meet us in a dark alley, but with other gums they might be all, like, Ooooh, How cute.