Have you ever wondered WHY dentists recommend that we brush AND floss every day? Because they serve two distinctly different purposes. According to the American Dental Association, brushing cleans your teeth, while flossing helps protect you from gum inflammation, AKA gingivitis. And if you get gingivitis, you could lose your teeth. So, which should you do first? Floss AFTER you’ve brushed with a fluoride toothpaste. Because the fluoride that’s still on your teeth will get spread around even farther as you floss.