Introducing Crest Bacteria Shield & Gum toothpaste. Created after years of research by Crest scientists, it’s been specially formulated to target the millions of plaque bacteria around the gum line. Crest Bacteria Shield & Gum uses a activated foam to help penetrate hard to reach areas, finding and neutralizing harmful plaque bacteria around the gum line. Clinically proven to reduce gum bleeding to fortify gums. Because if you're not taking care of your gums, you're not really taking care of your mouth. Helps kill up to 99% of bacteria* *plaque causing bacteria that causes gingivitis.