Bleeding Gums: What Your Mouth Is Telling You
Published by The Seoul Dental Clinic · Meet the dentists
Gums that bleed when you brush or floss are usually inflamed, most often because plaque has built up along the gumline. It is a signal to get checked, not something to ignore or to fix by brushing less. A dentist can tell whether cleaning is enough or whether gum treatment is needed.
What bleeding usually means
Healthy gums are firm and do not bleed with normal brushing. When they bleed, the most common reason is inflammation caused by bacterial plaque sitting along the gumline.
Inflamed gums are more fragile, so even gentle brushing can make them bleed. That does not mean you should stop. Gentle, consistent cleaning is part of how gums recover.
Common causes
A dentist can help work out which applies to you.
Plaque and tartar
Soft plaque and hardened tartar irritate the gum edge.
Brushing too hard
A hard brush or heavy pressure can injure the gum.
New flossing habit
Gums may bleed for a short time when you start cleaning between teeth.
Hormonal changes
Pregnancy and other changes can make gums more sensitive.
Medications or health conditions
Some medicines and conditions affect bleeding and gum health.
When to book a visit
Book an appointment if bleeding lasts more than a couple of weeks, if your gums look swollen or red, if you have persistent bad breath, or if teeth feel loose.
Bleeding with no clear cause, or with other symptoms such as unexplained bruising, deserves medical attention as well as dental. Tell your dentist about medications you take.
What a dentist will do
Look and measure
Your dentist examines your gums and may check how deep the spaces around teeth are.
Clean
Scaling removes tartar. Insurance-covered scaling follows national health insurance rules, and additional (non-covered) scaling is listed at ₩50,000.
Decide on further care
If inflammation has gone deeper, a gum treatment plan is quoted after examination.
Teach home care
You receive practical advice on brushing and cleaning between teeth.
Scaling versus gum treatment
The two are related but not the same.
| Scaling | Gum treatment | |
|---|---|---|
| Purpose | Remove tartar and plaque | Treat deeper gum inflammation |
| Published price | Additional (non-covered) ₩50,000; insurance-covered scaling follows national rules | Quoted after examination |
| When used | Routine cleaning and mild inflammation | When examination shows deeper involvement |
Your dentist decides which you need.
Looking after your gums at home
Use a soft brush and brush gently twice a day. Clean between your teeth daily. Keep up the routine even if you see a little blood at first, and tell your dentist if it does not improve.
Smoking affects gum health and can hide signs of inflammation. Mentioning it helps your dentist give accurate advice.
What to tell your dentist
Detail helps your dentist decide quickly whether this is simple inflammation or something that needs more care.
If you are unsure whether something is worth mentioning, mention it. Small details often help your dentist understand the whole picture, and nothing you ask will be treated as a silly question. You can also message the clinic after your visit if a question occurs to you later, and we will reply in English as soon as we can. Please remember that every mouth is different, so the advice here is general and your own plan is confirmed at the consultation.
- How long the bleeding has lasted and when it happens, for example brushing or flossing.
- Any medications, especially blood thinners.
- Whether you are pregnant or have had recent illness.
- Whether you smoke, and how often you clean between your teeth.
Video: our dentists explain
In Korean. On YouTube, turn on subtitles and choose Settings → Subtitles → Auto-translate → English.
What this video covers
The dentists explain that repeated bleeding when brushing is not normal for healthy gums and is often an early sign of inflammation (gingivitis), a stage before bone loss when treatment is relatively simple. Because gum disease is usually not very painful, many people ignore it while it progresses: gums become red and swollen, bad breath and a stale taste develop, gums recede so teeth look longer, gaps open between teeth, and eventually teeth may loosen as supporting bone is lost, which does not grow back on its own. They note that stress, family history, and diabetes can make gum disease progress faster, and that dental implants are also affected by inflammation and bone loss, often without pain. They advise seeing a dentist if bleeding lasts more than two weeks, happens every time you brush, or comes with receding gums, loose teeth, or bad breath, noting that early cases can usually be managed with scaling and good daily oral care.
- Healthy gums do not bleed repeatedly; bleeding often signals early inflammation
- Stress, genetics, and diabetes can speed up gum disease, and implants are affected too
- See a dentist if bleeding lasts over two weeks or comes with recession, looseness, or odor
Frequently asked questions
Should I stop brushing if my gums bleed?
No. Gentle brushing and cleaning help. See a dentist if bleeding continues.
Is bleeding gums always gum disease?
Not always, but it can be an early sign. An examination will tell.
How much is scaling?
Additional (non-covered) scaling is listed at ₩50,000. Insurance-covered scaling follows national health insurance rules.
How much is gum treatment?
No fixed price is published. It is quoted after examination.
Can pregnancy cause it?
Hormonal changes can make gums more sensitive. Mention a pregnancy to your dentist.
English-speaking dentists in Seongnam
The clinic was founded by two brothers trained at Seoul National University who direct it together. Three further dentists hold Ministry of Health and Welfare specialist certifications. Full credentials →
Dr. Hyun Sung Park
Clinic Director
- Co-founder and joint clinic director
- DDS, Seoul National University School of Dentistry
- Master’s degree, SNU Graduate School of Dentistry
- Former staff, Dept. of General Dentistry, SNU Dental Hospital
- Microendodontics Programme, SNU
- Course completion, UCLA, USA
- Member, UPenn Endodontics Study Club, USA
- Certified Invisalign Provider
- Osstem Implant AIC Programme
- Member, International Congress of Oral Implantologists (ICOI)
Dr. Hyeonjoon Park
Clinic Director
- Co-founder and joint clinic director
- DDS, Seoul National University School of Dentistry
- Master’s degree, SNU Graduate School of Dentistry
- Former staff, Dept. of General Dentistry, SNU Dental Hospital
- Affiliate Associate Fellow, American Academy of Implant Dentistry (AAID)
- Certified Invisalign Provider; leads orthodontic treatment
- Course completion, UCLA, USA
- Member, UPenn Endodontics Study Club, USA
- Member, International Congress of Oral Implantologists (ICOI)
- Member, Seoul Prime Orthodontic Study Club
Dr. Yu Jin Kim
Dentist
- Board-certified specialist, Advanced General Dentistry (Ministry of Health and Welfare)
- Johns Hopkins University, USA
- Master’s degree, SNU Graduate School of Dentistry
- Former staff, Osaka University Dental Hospital, Japan
Dr. Min Ji Choi
Dentist
- Board-certified specialist, Conservative Dentistry
- Board-certified specialist, Advanced General Dentistry
- Internship and residency, Jeonbuk National University Dental Hospital
- Master’s degree in Conservative Dentistry, Jeonbuk National University
Dr. Jin Young Choi
Dentist
- Board-certified specialist, Advanced General Dentistry
- Clinical training, Faculty of Dentistry, University of British Columbia, Canada
- Master’s degree, Kyungpook National University Graduate School of Dentistry
- BA in English Language and Literature, Korea University
Have your gums checked
Book an English-language consultation. We will examine your gums and explain the next steps clearly.