Meaning: Flossing helps remove food particles and plaque from between your teeth, which helps prevent cavities and gum disease.
Choice of Words: "Flossing" is the act of cleaning between teeth with a thin thread. "Keeps" means to continue to have or hold something. "Teeth" are the hard, white structures in your mouth used for biting and chewing. "Clean" means free from dirt, marks, or stains.