Do I really need to floss? January 22, 2020 17:53 Follow Yes, you do! Brushing removes food debris and plaque that are on your teeth, but not BETWEEN your teeth. Related articles Will gum disease affect the rest of my body? Is it normal for teeth to become loose or fall out as I age? I don't feel the mouthpiece moving in my mouth. I already visit the dentist regularly for cleaning. Does at-home oral care still matter? How do I know my mouthpiece size?