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Angel Aligner KiD in Seoul: Clear Aligners for Children’s Early Treatment
Angel Aligner KiD is a clear aligner system for children’s early orthodontic treatment while baby and adult teeth are mixed. At Yonsei Baro near Isu Station, Seoul, orthodontist Dr. Sally Chaekyung Lee first checks whether your child needs treatment now, then whether removable aligners or another appliance would suit them, in English.
Angel Aligner KiD at a glance
| Question | At Yonsei Baro |
|---|---|
| Who it is for | Children with a mix of baby and adult teeth who need early (Phase 1) treatment |
| Planning | iOrtho™ software, with the plan designed and checked by Dr. Lee |
| Daily wear | Usually 20–22 hours a day, with a parent’s support |
| Check-ups | About every 6–10 weeks |
| Alternatives | Monitoring, fixed expanders, functional or habit appliances, space maintainers |
| Treated by | Dr. Sally Chaekyung Lee, board-certified orthodontist |
What is Angel Aligner KiD?
Angel Aligner KiD is the children’s system from Angel Aligner . Like the adult system, it uses a series of custom, removable clear trays planned in iOrtho™ software. The difference is that the plan has to work with a mouth that is still changing: baby teeth are being lost, adult teeth are coming in and the jaws are growing.
Early treatment of this kind is called Phase 1. It aims to correct or improve specific problems while growth can help, for example making room for adult teeth or guiding a narrow arch, rather than to finish every detail. Many children still need a shorter Phase 2 later. Learn more about early orthodontic treatment .
What signs suggest a child may suit removable aligners?
Only an examination can confirm it, but these are some signs that a child might be a candidate for Angel Aligner KiD:
- An early bite or spacing problem, such as a narrow upper arch, crowding as the adult front teeth come in, or some crossbites .
- Enough adult teeth to work with, usually the first adult molars and some adult incisors.
- A child who can manage a removable appliance: taking it out for meals, putting it back, and keeping it in a case.
- A family routine that supports wear time, with a parent who can help with reminders and cleaning.
- No major skeletal problem that needs a different approach, as confirmed by imaging and growth assessment.
If any of these are missing, that does not mean your child cannot be treated. It may simply mean another appliance would work more predictably.
When might another approach work more predictably?
Aligners are one option among several for children. Depending on the problem, Dr. Lee may suggest:
- Monitoring. Many children seen early need only regular checks until the right moment to act.
- Growth guidance for jaw-size problems, timed using skeletal-maturity analysis.
- Habit and functional appliances where mouth breathing, tongue thrust or thumb sucking is driving the problem.
- Space maintainers when a baby tooth is lost early.
- A fixed expander when an arch needs widening and a removable appliance would rely too heavily on a young child’s wear time.
Dr. Lee previously directed pediatric and adolescent orthodontics at CDC Children’s Dental Clinic and is a member of the Korean Academy of Growth Dentistry. She is a mother too, and explains these choices plainly so parents can weigh them.
How does the process work?
1. Examination and growth check
About 60 minutes, with X-rays or 3D CT, an intraoral digital scan, photographs and a growth-plate analysis to see where your child is in growth.
2. Treat now or wait?
Dr. Lee explains whether early treatment would help, which appliance she would recommend and why, the expected length of Phase 1 and a written estimate.
3. Aligners and regular checks
If you choose Angel Aligner KiD, your child receives aligners and simple wear instructions. Check-ups follow about every 6–10 weeks, and Phase 1 results are held with retainers or monitoring while the remaining adult teeth come in.
Angel Aligner KiD FAQs
How is Angel Aligner KiD different from adult Angel Aligner?
Both use custom clear trays planned in iOrtho software. The children’s system is planned around a growing mouth, allowing for baby teeth that will be lost and adult teeth still erupting. The goals differ too: Phase 1 aims to improve specific problems during growth rather than to finish every detail of the adult bite.
Is Angel Aligner KiD or Invisalign First more suitable for my child?
Both are clear aligner systems for children’s early treatment, each with its own planning software and product options. Neither suits every child. Dr. Lee recommends one, or a different appliance altogether, after examining your child’s teeth, bite and growth, and explains her reasons so you can decide.
What happens if my child does not wear the aligners enough?
The teeth will not follow the plan, and treatment may take longer or need new aligners. Tell us early if wear time is slipping. Sometimes small changes to the daily routine help; sometimes a fixed appliance, which does not depend on wear time, is the more sensible choice for that child.
Can my child eat normally with Angel Aligner KiD?
Yes. Aligners come out for every meal and snack, so there are no food restrictions while they are out. Brush or rinse before putting them back, and drink only plain water while they are in, because sugary drinks and milk trapped under the trays raise the risk of decay.
Who will look after my child’s teeth during treatment?
Dr. Sally Chaekyung Lee handles the orthodontic treatment from start to finish. For check-ups, cleanings, fluoride and fillings, our board-certified pediatric dentist, Dr. Ho-seon Lee, can see your child at the same clinic, which makes it easier to keep teeth healthy during treatment. Contact us for pediatric dentistry appointment times.
Medically reviewed by Dr. Sally Chaekyung Lee, DDS, PhD
Board-certified orthodontist (Korea Ministry of Health and Welfare) · Adjunct Professor of Orthodontics, Yonsei University · Last updated October 2026
This page is general information, not a diagnosis. Treatment results and duration vary from person to person. Orthodontic treatment can cause temporary discomfort and, in some cases, root shortening, gum recession or tooth decay if oral hygiene is poor; teeth can relapse if retainers are not worn as instructed.
Wondering whether your child needs early treatment?
Book an orthodontic check. Dr. Lee will examine your child, explain whether to act now or wait, and talk you through every option in English. Isu Station Exit 2 · Open until 9 PM Mon & Thu · Saturdays 9 AM–2 PM.