Clinical cases · Before & after

Orthodontic Before and After Cases in Seoul

These three cases were treated by Dr. Sally Chaekyung Lee at Isu Yonsei Baro Orthodontics and are published with patient consent. Each shows the diagnosis, treatment plan, appliance, duration and whether extractions were needed, so you can see how complex crowding and deep-bite cases were approached without extractions.

Reviewed by Dr. Sally Chaekyung Lee, DDS, PhD · Updated October 2026

Important: These cases are published with patient consent. Individual results and side effects vary. Treatment, including the appliance, duration and whether extractions are needed, is decided only after a consultation and examination. Possible side effects of orthodontic treatment can include discomfort, gum irritation, root resorption, decalcification and relapse without retainers.

Case 1 · Adult · Invisalign

Adult crowding treated with Invisalign, non-extraction

Before

Case 1 before Invisalign: adult with crowded, overlapping front teeth and one upper front tooth sticking out

After

Case 1 after 20 months of Invisalign: front teeth aligned without extractions
  • Diagnosis: Crowded, overlapping front teeth, with one upper front tooth sticking out of line.
  • Plan: Create space and align both arches with clear aligners, without removing teeth, then retain the result.
  • Appliance: Invisalign clear aligners
  • Duration: 20 months (July 2024 to March 2026)
  • Extraction: Non-extraction

Related: Invisalign in Seoul · Crowded teeth · Adult orthodontics

Case 2 · Teen · Braces

Teen deep bite and displaced canine treated with braces, non-extraction

Before

Case 2 before braces: teen with upper right canine out of line, deep bite and crowding in both arches

After

Case 2 after 18 months of braces: canine brought into the arch and deep bite corrected without extractions
  • Diagnosis: Upper right canine out of line, deep bite and crowding in both arches; no skeletal problem.
  • Plan: Align both arches, guide the canine into position and open the deep bite with fixed braces, without removing teeth, then retain.
  • Appliance: Braces
  • Duration: 18 months (January 2023 to July 2024)
  • Extraction: Non-extraction

Related: Teen orthodontics · Deep bite · High canines

Case 3 · Teen · Braces

Teen with both upper canines high treated with braces, non-extraction

Before

Case 3 before braces: teen with both upper canines erupted high and outside the arch and a severe deep bite

After

Case 3 after 19 months of braces: both upper canines brought into the arch and deep bite reduced without extractions
  • Diagnosis: Both upper canines erupted high and outside the arch, with a severe deep bite.
  • Plan: Create space and bring both canines down into the arch, correct the deep bite with fixed braces, without removing teeth, then retain.
  • Appliance: Braces
  • Duration: 19 months (February 2023 to September 2024)
  • Extraction: Non-extraction

Related: Non-extraction orthodontics · High canines · Do I need extractions?

How these cases were planned

Each case began with digital intraoral scans, 3D CBCT imaging on the RAY Quantum 5D CT, photos and a facial scan. In Dr. Lee's practice, the decision on whether extractions are needed is made after checking roots, bone and whole-face balance, not from tooth position alone. Not every case can be treated without extractions; your plan depends on your examination.

Learn more about our technology , digital 3D treatment planning and Dr. Sally Lee . Read how we publish clinical content in our editorial policy .

Talk to Dr. Lee in English

Find out what treatment could look like for your teeth. Your options are explained after an examination.