The American Dental Association (ADA) says it doesn’t matter if you floss before or after brushing, as long as you do a thorough job. While some dentists recommend flossing first to remove larger food particles, there’s no scientific evidence to support this claim. The most important thing is to develop a consistent routine that you can stick to. Flossing is essential for removing plaque from below the gumline, reducing gum soreness, and preventing gingivitis.