Children & teens
Sealing permanent molars soon after they appear.
- First molars often around age 6
- Second molars often around age 12
- Ask at your child's check-up
Gangnam Seoul · Cavity prevention in English
Dental Sealants in Gangnam Seoul
Back teeth have deep grooves where food and bacteria hide. A sealant is a thin protective coating that helps keep those grooves clean.
In short: a dental sealant is a thin tooth-coloured resin coating painted onto the chewing surfaces of back teeth to help prevent cavities. It is most often used for children and teens once their permanent molars come through, but some adults benefit too. Applying it is quick, needs no drilling or injection, and your dentist will advise whether it suits your teeth.
English-speaking team · Saturday appointments · Cheongdam Station Exit 14
Since 1996
30 years of preventive care in Gangnam
- SNU-trained Every dentist trained at Seoul National University
- In English Options explained in English
- Saturdays Open Saturday 9:00–13:00
- ADA standards Infection control to ADA standards
Understanding sealants
What are dental sealants?
The chewing surfaces of molars have narrow pits and grooves (fissures) that toothbrush bristles struggle to reach. Many cavities in children start there.
A sealant flows into these grooves and hardens, making the surface smoother and easier to clean. It works alongside brushing and fluoride, not instead of them.
Adults
Sometimes useful for deep grooves without fillings.
- Higher cavity risk
- Deep grooves, no decay
- Your dentist advises if worthwhile
Good candidates
Who may benefit
- Children with newly erupted molars
- Teens with deep grooves
- People with frequent cavities
- Anyone who finds back teeth hard to clean
Limits
What sealants can't do
- They do not protect between teeth
- They need checking at each visit
- They can wear or chip over time
- They do not replace brushing or flossing
How it works
Sealant application, step by step.
A quick visit with no drilling or injections.
- 1
Check
Grooves checked for any decay first.
Check-up - 2
Clean & dry
Tooth cleaned and kept dry.
A few minutes - 3
Apply
Sealant painted into the grooves.
Per tooth - 4
Set & check
Hardened with a curing light; bite checked.
Same visit
Compare
Sealants, fluoride or fillings?
These protect teeth in different ways; your dentist may combine them.
| Option | What it does | Best for |
|---|---|---|
| Sealant | Seals molar grooves | Healthy back teeth with deep grooves |
| Fluoride treatment | Strengthens enamel | All tooth surfaces, higher cavity risk |
| Tooth-coloured filling | Repairs decay | Teeth that already have a cavity |
For international patients
Sealants for expat families in Seoul
Sealants are usually done at a check-up visit, so they fit easily around school, work or a short stay.
- Expats & residents: ask us whether NHIS applies to your child's sealants.
- U.S. military families: we work with the TRICARE Dental Program.
- Visitors: English receipts and treatment notes for your insurer.
A typical visit plan
- Before you arrive
Book by WhatsApp or email.
- Check-up
Exam and cleaning; sealants discussed.
- Same or next visit
Sealants applied.
- Every check-up
Sealants checked and repaired if needed.
After sealants
Looking after sealed teeth
You can eat and drink normally right away.
- Keep brushing twice a day with fluoride toothpaste
- Avoid chewing ice or hard sweets
- Come for regular check-ups
- Tell us if a sealant feels rough or missing
Questions patients ask us
Dental sealants FAQ
Do dental sealants hurt?
No drilling or injection is usually needed. The tooth is cleaned, dried and coated.
How long do sealants last?
Sealants can last several years but may wear or chip. We check them at each visit and repair them if needed.
At what age should children get sealants?
Often soon after the permanent molars appear — around age 6 and again around age 12. Your dentist advises case by case.
Can adults get sealants?
Sometimes, if molars have deep grooves and no fillings or decay. Your dentist will advise.
Do you have English-speaking dentists?
Yes. Our dentists explain your diagnosis and options in English, and our English coordinator, Ms. Choi, has helped international patients at A Plus for over 15 years.
Where is A Plus Dental Clinic and how do I book?
We are on the 3rd floor of the Samgang Building, 704 Yeongdong-daero, Gangnam-gu, Seoul — right outside Exit 14 of Cheongdam Station (Line 7), with free basement parking. Book on WhatsApp at +82 10-9325-2875, or email aplus.dentalclinic@gmail.com.
Come and say hello
Protect those back teeth.
Message us in English to book a check-up for you or your child.
- Address
- 3F Samgang Building, 704 Yeongdong-daero, Gangnam-gu, Seoul
- Subway
- Cheongdam Station (Line 7), right outside Exit 14
- Hours
- Mon–Fri 9:30–18:00 (lunch 12:30–13:00)
Saturday 9:00–13:00 (no lunch break)
Closed Sundays & public holidays - +82 10-9325-2875
- Phone
- +82 10-9325-2875
This page is for general information and does not replace an examination by a dentist. A Plus Dental Clinic · Gangnam, Seoul · Since 1996 · Last updated October 2026
