Should you bleed when you floss

Plaque at the gum margin irritates the gingiva, making its small blood vessels more likely to bleed when the floss passes through. A cut from snapping floss down, trapped food, tartar, a cavity edge, or medication-related bleeding can produce a similar sign.

Use a clean section of floss, guide it gently through the contact, curve it into a C around each tooth, and move it below the gum edge without forcing it. Brush twice daily with a soft brush and clean between the teeth consistently; do not stop cleaning only because the tissue bleeds.

Arrange an examination if bleeding continues after careful daily cleaning, occurs without touching the gums, or comes with swelling, tenderness, bad taste, loose teeth, or persistent bad breath. Urgent care is appropriate for heavy bleeding that does not settle with gentle pressure, facial swelling, fever, or trouble swallowing.

Ask whether the bleeding is due to gingivitis, tartar, a gum pocket, or a local injury, and whether your flossing technique fits the spaces between your teeth. Ask if professional cleaning, periodontal measurements, dental X-rays, or a medication review is needed.