“Cleaning between the teeth with floss or another suitable device improves dental health.”
Moderate confidence. Randomized trials suggest small reductions in gingivitis or plaque when interdental cleaning is added to brushing, but the evidence is low to very low certainty, mostly short term and does not establish prevention of cavities or periodontitis.
Floss or an interdental brush can remove plaque that a toothbrush misses and may modestly reduce gum inflammation. Evidence is weaker than common advertising implies, and the best device depends on the spaces between your teeth, dexterity and dental work.
Flossing is one option, not a purity test. Interdental brushes or other professionally recommended devices may be easier or more effective for some people, especially around braces, bridges or wider spaces.
Safety note: Aggressive technique can injure gums. Mild bleeding can occur when inflamed gums are first cleaned, but persistent or heavy bleeding, swelling, pain or loose teeth needs assessment.
Talk to a healthcare professional if: See a dentist or hygienist for persistent bleeding, gum recession, bad breath, tooth pain, swelling or difficulty cleaning around dental work.
Regular, gentle interdental cleaning is a reasonable addition to twice-daily brushing with fluoride toothpaste, but it does not replace dental checkups or prove that cavities cannot occur.
Ask a dental professional to show you a device and technique that fit your mouth, then use it consistently without snapping or forcing it into the gums.
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