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Yonsei Baro Dental Clinic · 치과미슐랭 · July 22, 2026
Hello, this is Apgujeong Yonsei Baro Dental Clinic, a Gangnam orthodontic clinic. Most people considering orthodontic treatment for a protruding mouth are primarily curious about...
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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.
Clinic: Yonsei Baro Dental Clinic
Original post date: July 22, 2026
Translated at: August 17, 2026 at 2:33 PM
Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.
Hello, this is Apgujeong Yonsei Baro Dental Clinic, a Gangnam orthodontic clinic.
Most people considering orthodontic treatment for a protruding mouth are primarily curious about one thing: “How much will my mouth move back?”
However, a satisfying orthodontic result is not determined simply by how far the mouth moves back.
A natural and beautiful smile is completed only when the buccal corridor, smile line, lip incompetence, and overall lip balance are improved together.
Today, we would like to introduce an actual treatment case in which extraction orthodontics for a protruding mouth enhanced the overall quality of the patient’s smile.
23.02–24.09
Many people think the goal of orthodontic treatment is simply to straighten the teeth.
However, in orthodontic treatment for a protruding mouth, it is important to consider all of the following together:
This is because orthodontic treatment creates harmony not only among the teeth but across the entire face.
23.02
At the initial visit, the patient was observed to have:
Although the tooth alignment and molar occlusion were relatively good, the front teeth were tilted forward, making it difficult to close the lips naturally. When the lips remain open enough for the teeth to show without consciously applying force, this is called lip incompetence. These symptoms often improve as the protruding mouth is corrected.
The treatment plan was to extract all four premolars and achieve a clear improvement in the protruding mouth.
The patient chose Clippy-C appliances, and orthodontic treatment began immediately.
23.09
This was the appearance seven months after treatment began.
The extraction spaces had just begun to close, and the front teeth were starting to move backward.
24.03
24.03
These photos were taken one year and one month after treatment began.
All the extraction spaces had closed, and mini-screws were being used to align the midline.
This is what is referred to as the finishing stage.
Then, one year and seven months after treatment began, orthodontic treatment was finally completed and the appliances were removed.
24.09
The midline was well aligned,
24.09
and the occlusion was also good.
23.02–24.09
The total treatment period was one year and seven months.
Although extraction orthodontic treatment is generally said to take about two years, younger patients in their early twenties or younger most commonly require between one year and six months and two years.
23.02–24.09
23.02–24.09
These are frontal smile photos taken before and after treatment.
Buccal corridors that were not present before treatment appeared inside both corners of the mouth.
Buccal corridors of an appropriate size, without being too large, are important for smile aesthetics.
23.02–24.09
Another factor that cannot be overlooked in smile aesthetics is the smile line.
The smile line refers to the line connecting the edges of the upper teeth.
For a beautiful smile, it should be parallel to the lower lip.
The smile line, which had previously been too flat and straight compared with the lower lip, changed to a rounded shape that runs parallel to the lower lip.
23.02–24.09
Yes. As the front teeth moved backward, the protruding appearance decreased, and the lips changed so that they could close naturally without consciously applying force.
When lip incompetence improves, the face can look much more relaxed not only from the front but also in profile.
23.02–24.09
What if you have a protruding mouth and full lips?
With extraction orthodontic treatment, your appearance will change within two years.
The lips help guard against the various concerns about changes in the lip profile during orthodontic treatment, such as a lengthened philtrum, inward-rolling lips, and thinner lips.
23.02–24.09
The lip profile became more attractive without looking overdone.
The curve descending from the nose to the upper lip is especially beautiful.
The root parallelism was also good, and no adverse effects were visible.
That concludes this case of orthodontic treatment for a protruding mouth.
✔ Treatment period: 1 year and 7 months
✔ Extraction of all four premolars
✔ Clippy-C orthodontic treatment
✔ Use of mini-screws
✔ Improvement of the protruding mouth
✔ Improvement of lip incompetence
✔ Formation of buccal corridors
✔ Improvement of the smile line
✔ Creation of a natural lip profile
✔ Maintenance of stable occlusion and root condition
Orthodontic treatment for a protruding mouth is not simply a treatment that moves the teeth backward.
When the buccal corridors, smile line, lip incompetence, and profile balance are considered together, the result can be more natural and satisfying.
If you are considering extraction orthodontic treatment, it is important to look beyond how far the teeth will move back and also consider what kind of facial appearance and smile the treatment is planned to achieve.
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