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Daechi-dong Orthodontic Clinic, Growth Orthodontics for a Receding Chin and Activator

Yonsei JW Dental Clinic - English Speaking Dentist · 대치동교정치과 연세정원치과 · September 29, 2025

If you are looking for a dentist in Daechi-dong that is good at orthodontics, or if you are looking for a place where the chief doctor personally provides one-on-one orthodontic tr...

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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 JW Dental Clinic - English Speaking Dentist

Original post date: September 29, 2025

Translated at: April 20, 2026 at 2:31 PM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

If you are looking for a dentist in Daechi-dong that is good at orthodontics, or if you are looking for a place where the chief doctor personally provides one-on-one orthodontic treatment,

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Daechi-dong Orthodontic Clinic, Yonsei Jeongwon Dental Clinic

Hello, I am Director Yoon Jeong-won, the chief doctor of Yonsei Jeongwon Dental Clinic, an orthodontic clinic in Daechi-dong.

In a previous post, I explained the importance of extracting baby teeth at the proper time and treatment that secures space for permanent teeth to erupt.

Today, I’ll talk about orthodontic treatment for Class II malocclusion and a receding chin.

A receding chin occurs when there is a discrepancy in jaw growth due to excessive growth of the upper jaw or undergrowth of the lower jaw. The goal of growth orthodontics is to reduce this jaw growth imbalance or change the direction of growth. Any remaining tooth alignment is then addressed with secondary orthodontic treatment after all permanent teeth have erupted.

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2024.7

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2024.7

In the case above, the lower jaw has not grown enough, so the upper teeth protrude, and the lips can only be closed by applying force. Because the muscles are strained, a “hueok-jumeok” wrinkle appears under the chin. In addition, a shadow appears on the lower lip. Since the upper front teeth protrude and the bite is deep, the lower teeth are not easily visible.

In such cases, an Activator appliance is worn to bring the lower jaw forward and improve the deep bite. A device called a headgear is also worn to help control vertical growth.

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Activator

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Activator

For this type of growth orthodontics, it is important not to miss the treatment window. In growth orthodontics, a hand X-ray is taken to check the growth plate, and the timing of treatment is determined based on that examination. Children and adolescents experience rapid height growth during the “pubertal peak growth period,” and the physical changes during this period greatly affect the growth of the facial bones and dental arch.

Therefore, this “pubertal peak growth period” is a very important time in children’s orthodontic treatment. By providing the proper treatment at the proper time, it can prevent the appearance from worsening and make orthodontic treatment easier once growth is complete.

For underbite cases, it is better to begin treatment as soon as an inverted bite of the front teeth is detected. However, for a receding chin, treatment timed to this “pubertal peak growth period” can effectively improve the receding chin by taking advantage of the rapid growth during this period.

Effects of the Activator appliance

The effects of the Activator appliance are as follows. By fabricating the appliance with the lower jaw held forward, abnormal perioral muscle function is removed, and the surrounding soft tissues and muscles are stretched in this position.

Due to the force of the muscles pulling the jaw back to its original position, the lower front teeth are pushed slightly outward, while the upper front teeth receive inward pressure, creating a bone structure and tooth inclination adapted to the new position.

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Mechanism of action of the Activator

Advantages of growth orthodontics

To avoid missing the golden time for orthodontic treatment in children and adolescents, I recommend having a detailed orthodontic examination around the age of 6 to 7. This is the first step toward preventing the appearance from worsening by providing treatment at the right time and helping make orthodontic treatment easier later on.

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Advantages of growth orthodontics

At Yonsei Jeongwon Dental Clinic, an orthodontic clinic in Daechi-dong, the costs for orthodontic treatment include the detailed diagnosis fee, monthly fee, and so on (excluding the retainer fee), so you do not need to worry about additional expenses. In addition, since general dentistry is also available, all treatments needed for orthodontics, such as extractions and cavity treatment, can be done in one place, and an installment payment system is in place to reduce the burden of paying a large sum at once.

Director Yoon Jeong-won, who oversees the orthodontics department, has focused exclusively on orthodontics for 16 years of clinical experience and has extensive experience with many high-difficulty cases. Therefore, various orthodontic cases such as malocclusion, protruding mouth, and underbite can be treated effectively.

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Yoon Jeong-won, Chief Doctor of Yonsei Jeongwon Dental Clinic

If you visit Yonsei Jeongwon Dental Clinic in Daechi-dong, you can accurately understand your current condition through a simple oral examination at no additional cost. During consultation, you can directly compare various appliances such as Clarity, Clippy C, and Invisalign, and hear detailed explanations of their pros and cons, so please feel free to inquire about a consultation.

Yonsei Jeongwon Dental Clinic has all the latest equipment needed for orthodontic treatment, including the iTero Lumina 3D oral scanner, growth plate examination, and pre- and post-treatment simulations using the Morpheus facial scanner, allowing for more precise and systematic orthodontic care.

Many people considering orthodontic treatment due to protruding mouth, crowded teeth, malocclusion, underbite, and similar concerns may already have gathered a lot of information through online searches. Even so, comparing each appliance in person and hearing detailed explanations will be very helpful in making a decision.

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Daechi-dong Orthodontic Clinic

Yonsei Jeongwon Dental Clinic is not only convenient for parking, but also close to Samseong Station, Hakyeoul Station, Daechi Station, and Hanti Station, making it very convenient for patients coming from Samseong-dong, Daechi-dong, Gaepo-dong, Irwon-dong, Dogok-dong, Yeoksam-dong, and even Jamsil.

Building next to BMW at the Woosung Apartment intersection in Daechi-dong

(Across from Starbucks/Samsung Store)

Yonsei Jeongwon Dental Clinic, Daechi-dong Orthodontic Clinic, offers

convenient and free parking

Consultation and inquiries: 02-501-2879

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