Bleeding Gums: Causes, Home Care and When to See a Dentist

Bleeding when you brush or floss is common, but it is not normal. Here is what usually causes it, what you can do at home and when to see a dentist.

CategoryGum Health
Reading time6 min
PublishedFeb 20, 2024
UpdatedNov 1, 2026

The short answer

Bleeding gums are most often caused by gingivitis, the early stage of gum disease, which usually improves with gentle, thorough brushing, daily flossing and a professional cleaning. See a dentist soon if the bleeding keeps happening, and right away if it is heavy, won't stop with pressure, or comes with swelling, pain or pus.

Key takeaways

  • Gingivitis is the most common cause of bleeding gums
  • Gentle brushing and daily flossing often help within days
  • Medications, pregnancy, vitamin deficiencies and some health conditions can also cause bleeding
  • Heavy bleeding, swelling, pain or pus need prompt dental care

Bleeding gums are often a sign of a problem that shouldn't be ignored. Occasional bleeding when you brush or floss may not be serious, but bleeding that keeps happening, or that is heavy, can point to something that needs care. This guide covers the common causes, what you can do at home and the signs that mean it's time to see a dentist.

What causes bleeding gums?

Bleeding gums can have many causes, from minor to serious:

  • Gingivitis: the early stage of gum disease, with red, swollen gums that bleed easily. Plaque and bacteria from poor oral hygiene are the main causes.
  • Periodontitis: if gingivitis isn't treated, it can progress to this more serious form of gum disease. The gums pull away from the teeth and form infected pockets, which can lead to bone and tooth loss.
  • Poor oral hygiene: skipping brushing and flossing lets plaque build up and irritate the gums.
  • Vitamin deficiencies: low levels of vitamin C (needed for healthy gum tissue) or vitamin K (needed for blood clotting) can contribute to bleeding.
  • Medications: blood thinners and anticoagulants can make gums bleed more easily. Tell your doctor and dentist if you take them.
  • Pregnancy gingivitis: hormone changes during pregnancy make gums more prone to swelling and bleeding. It usually improves after the baby is born.
  • Medical conditions: diabetes, leukemia and bleeding disorders can raise the risk of bleeding gums.
  • Smoking: smoking weakens the immune system and reduces blood flow to the gums, making infection and bleeding more likely.
  • Stress: long-term stress can weaken the immune system and increase inflammation, including in the gums.
  • Misaligned or damaged teeth: these can irritate the gums. Treatment such as orthodontics or crowns can help.

What to do at home

If your gums bleed a little when you brush or floss, start with these steps:

  • Brush gently twice a day with a soft-bristled toothbrush and fluoride toothpaste.
  • Floss once a day. Bleeding from flossing often eases as the gums get healthier.
  • Use interdental brushes once a day along with flossing to clean between your teeth.
  • Rinse with warm salt water to soothe sore gums.
  • Avoid smoking and cut back on sugary snacks and drinks.

If the bleeding hasn't improved after a week or two of good home care, book a visit. A professional cleaning removes the tartar that brushing can't.

Signs your bleeding gums need a dentist soon

Heavy bleeding

If your gums bleed heavily and the bleeding doesn't stop after a few minutes of pressure, seek care right away. It can be a sign of gum disease, an injury or another condition that needs prompt attention from an emergency dentist.

Swollen gums

Swollen, tender gums can mean infection or inflammation. If your gums are swollen and bleeding, see a dentist soon. Left untreated, it can lead to a painful abscess.

Pain or discomfort

Bleeding with pain, especially when you chew or brush, can be a sign of advanced gum disease, an abscess or another dental problem that needs prompt care.

Receding gums

Gums pulling away from the teeth can be caused by gum disease or brushing too hard. Receding gums expose the roots, which can cause sensitivity and raise the risk of infection. A dentist can find the cause and recommend treatment.

Bad breath that won't go away

Chronic bad breath can be a sign of gum disease. If it continues despite brushing and flossing, see a dentist. Read How to Get Rid of Bad Breath from Gum Disease.

Gums bleeding often? Book a gum check with Dr. Desai.

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How dentists treat bleeding gums

Treatment depends on the cause. For gingivitis, a professional cleaning and better home care are often enough. For periodontitis, your dentist may recommend a deep cleaning (scaling and root planing) and regular gum maintenance visits. Read Is a Deep Cleaning Necessary? to learn more.

Gum care in Tustin

We treat bleeding gums and gum disease for patients from Tustin, Irvine, City of Orange, Santa Ana and the rest of Orange County, including same-day visits when you need them. Larwin Square Dentistry is at 604 E 1st St in the Larwin Square Shopping Center in Tustin. We're open Monday to Wednesday and Friday from 9:00 AM to 5:30 PM, and every Saturday from 8:00 AM to 2:30 PM. Call (714) 505-9462 or book online.

Questions patients ask

Is it normal for gums to bleed when brushing?

It's common, but it isn't normal. Bleeding usually means the gums are inflamed, most often from plaque buildup. It often improves with gentle brushing, daily flossing and a professional cleaning.

Should I stop flossing if my gums bleed?

No. Keep flossing gently every day. The bleeding usually decreases as your gums become healthier. If it doesn't improve within a week or two, see your dentist.

When are bleeding gums an emergency?

Seek care right away if the bleeding is heavy and won't stop with pressure, or if it comes with swelling, severe pain, pus or a fever.

Can bleeding gums be a sign of something serious?

Most bleeding gums are caused by gum inflammation, but they can also be linked to medications, vitamin deficiencies, diabetes or bleeding disorders. Your dentist can help find the cause and refer you to your doctor if needed.

Don't ignore bleeding gums

Early care keeps gum problems small. If your gums keep bleeding, book a visit and Dr. Desai will find the cause and recommend the right treatment.

Learn more about Family Dentistry →

Written and reviewed by Hiral Desai, DDS, MDS, D. ABDSM

UCLA School of Dentistry; Diplomate, American Board of Dental Sleep Medicine; postgraduate training in periodontics and oral implantology; 15+ years of experience, including family and emergency dentistry in the USA and Australia; published research. About Dr. Desai

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This guide is general information, not a diagnosis. Book a visit for advice about your own teeth.