This article is general information, not medical advice. If a symptom is new, getting worse or worrying you, talk to a doctor.
A little pink in the sink after brushing is easy to ignore, but healthy gums should not bleed. The good news is that the most common cause is early gum disease, and at that stage it can be fully reversed with better cleaning.
The most common cause: gingivitis
Plaque is a sticky film of bacteria that builds up on teeth, especially along the gumline and between teeth. If it is not removed, your gums become inflamed: red, puffy and quick to bleed. This is gingivitis. It is very common, it is usually painless, and it is reversible. Left alone, it can progress to periodontitis, where the gum and bone that hold teeth in place are damaged.
Other causes of bleeding gums
- Brushing too hard or using a hard-bristled brush.
- Starting to floss: gums often bleed for the first week, then settle.
- Blood-thinning medicines such as warfarin, apixaban or daily aspirin.
- Pregnancy and hormonal changes, which make gums more sensitive.
- Diabetes, which is linked with a higher risk of gum disease.
- Smoking, which raises gum disease risk but can hide bleeding, so a lack of bleeding is not reassuring in smokers.
- Vitamin C deficiency, which is rare but possible with a very limited diet.
A two-week plan to stop bleeding gums
- Brush twice a day for two full minutes with a soft brush and fluoride toothpaste. Angle the bristles at the gumline and use small, gentle circles.
- Consider an electric toothbrush. A Cochrane review found powered toothbrushes reduce plaque and gingivitis more than manual brushing.
- Clean between your teeth once a day with floss or small interdental brushes. Expect some bleeding at first. Keep going.
- Spit, do not rinse after brushing, so the fluoride stays on your teeth.
- Cut back on sugary snacks and drinks between meals.
- Do not stop cleaning because of the bleeding. Gentle, regular cleaning is what lets the gums heal.
Most people see a clear improvement in one to two weeks.
When to see a dentist
- Bleeding continues after two weeks of good cleaning.
- Gums are receding, teeth look longer or feel loose.
- You have persistent bad breath or a bad taste.
- Gums are swollen, painful or there is pus.
- You are pregnant, diabetic or take blood thinners and notice bleeding.
A dental hygienist can remove hardened plaque (tartar) that brushing cannot shift. Regular check-ups catch gum disease before it does lasting damage. Gum disease has also been linked with diabetes and heart disease, so it is worth taking seriously.
Do oral probiotics help bleeding gums?
Some small studies suggest certain probiotic strains may reduce gum bleeding when added to normal brushing. The evidence is early and mixed. Our guide do oral probiotics work? covers what the research shows and what to look for, including the popular ProDentim chewables.
Bottom line
Bleeding gums are usually your gums telling you plaque is building up. Brush gently but thoroughly along the gumline, clean between your teeth every day, and give it two weeks. If the bleeding does not stop, see a dentist.
Frequently asked questions
Is it normal for gums to bleed when brushing?
No. Healthy gums should not bleed. Bleeding is usually a sign of gingivitis, an early and reversible form of gum disease.
Should I stop flossing if my gums bleed?
No. Bleeding often happens when you start flossing and usually settles within a week or two as the gums heal. If it continues beyond two weeks, see a dentist.
How long does it take for bleeding gums to heal?
With good brushing and daily cleaning between teeth, most people see improvement within one to two weeks.
Can bleeding gums be serious?
If untreated, gingivitis can progress to periodontitis, which can lead to tooth loss. Receding gums, loose teeth or persistent bad breath need a dentist.
What does gingivitis feel like?
Often nothing at all. Gums may look red and puffy, bleed when you brush or floss, and some people notice bad breath. It is usually painless, which is why it is easy to miss.
Why do my gums bleed when flossing but not brushing?
Floss reaches between teeth where plaque builds up and brushing misses, so inflammation there shows up when you floss. Keep flossing gently every day and it usually settles within two weeks.
Why is my gum bleeding around a crown?
Plaque collects easily at the edge of a crown, causing gum inflammation. Clean carefully around it with floss or interdental brushes, and see your dentist if it continues, as the crown may need checking.
