Plaque Buildup and Bleeding

How plaque irritates the gums

Plaque forms on teeth throughout the day, especially along the gumline and between teeth where a brush reaches poorly. The bacteria in it release substances that irritate nearby gum tissue. The body responds with inflammation, so the gums become puffy, darker red and more fragile than healthy gums.

Fragile, inflamed gum tissue bleeds from light contact, such as brushing or flossing. That is why bleeding often shows up first in the places that get cleaned least well, rather than evenly across the whole mouth.

Why bleeding can start when you clean more

Many people notice blood when they begin flossing again after a long gap, and conclude that flossing is causing damage. More often the tissue was already irritated, and cleaning is simply exposing it.

What matters is the trend. If the bleeding gradually lessens over a week or two of gentle, regular cleaning, the plaque is probably being managed. If it stays the same or gets worse, something else may be involved and a dentist should look.

What to do at home

The basics are the same ones dental organizations commonly advise. Brush twice a day with a fluoride toothpaste, angling the bristles toward the gumline, and clean between your teeth once a day with floss, small brushes or another tool that suits your spacing.

Pressure is not the goal. A soft brush and slow, gentle strokes remove plaque without scraping the gums. Limiting how often sugary or acidic food and drinks reach your teeth also helps, since it reduces what the plaque bacteria have to feed on.

• Use a soft-bristled brush and replace it when the bristles splay
• Spend the full two minutes, including the gumline
• Clean between teeth once a day
• Do not smoke, since it hides and worsens gum problems

When plaque has hardened

Plaque that stays on the teeth can harden into tartar, also called calculus. It is rough, holds more plaque, and cannot be removed with a toothbrush or floss, however carefully you clean.

If your gums keep bleeding even though your routine is good, hardened deposits may be part of the picture. A dental professional can remove them and show you where your technique is missing spots, which is often the most useful single step.

Where supplements fit, if at all

Research on oral probiotics is still developing, and the evidence is limited and mixed. One example is ProDentim, which the seller describes as a chewable oral probiotic; the seller makes claims about it that we have not verified, and its page does not show per-strain amounts. Anyone pregnant, breastfeeding, taking medicines, or with a medical condition or allergy should ask a dentist, doctor or pharmacist before using any supplement. No supplement replaces brushing, cleaning between teeth and dental visits.

Questions readers ask