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Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment.

Seoul Bardi Dental Clinic · ✅ 강동구 상일동역 서울바르디치과 · March 25, 2025

Hello~ I’m Lee Juri, chief director of Seoul Bardi Dental Clinic. ​ Many people ask, “I heard tooth roots can dissolve when you start orthodontic treatment.... Is that okay??” ​ So...

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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: Seoul Bardi Dental Clinic

Original post date: March 25, 2025

Translated at: April 20, 2026 at 5:06 PM

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

Hello~

I’m Lee Juri, chief director of Seoul Bardi Dental Clinic.

Many people ask, “I heard tooth roots can dissolve when you start orthodontic treatment.... Is that okay??”

Some people are really worried, asking, “Won’t my roots get shorter later and make my teeth fall out?”

Today, I’ll explain in detail the phenomenon many people are curious about: tooth roots becoming shorter during orthodontic treatment,

that is, root resorption.

Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment.

I hope this helps ease your concerns~!

Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment. image 1

What does shortening tooth roots mean...?

Because a tooth root is called the root,

it is also referred to as root resorption.

It is one of the side effects of orthodontic treatment,

and the tooth root can become shorter during the process of moving teeth!

However, in most cases, it is not enough to interfere with daily life~

Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment. image 2

250102

Because it occurs inside the gum bone,

it is difficult to observe with the naked eye!

What causes root resorption??

It is easy to understand if you think about the principles of orthodontic treatment.

Orthodontic treatment is the process of moving teeth by applying force to them.

At this time, the bone around the tooth root is resorbed

and then remodeled again, allowing the teeth to move.

However, during this process, the tip of the root may sometimes be microscopically resorbed.

Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment. image 3

250103 We check by looking at the X-ray~

This usually happens when 1) excessive force is applied

(this would be the case when teeth are being moved too aggressively~?)

  1. long-term orthodontic treatment

(let’s make sure to wear the appliances on time!)

Sometimes 3) patients are born with naturally short tooth roots!

  1. teeth that have experienced trauma to the front teeth...

There are various causes,

but it occurs because force is applied from the outside through orthodontic treatment!

Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment. image 4

241022 There is no way to tell from the outside whether root resorption has occurred

Does it happen 100% if you get orthodontic treatment?

According to studies, some degree of root resorption is observed in about 30–50% of orthodontic patients.

Most patients have no problems~

Shortening of tooth roots is usually only a slight change of about 1–2 mm,

and we take X-rays every time you come in.

If overcorrection is occurring

or if the tooth roots seem to be getting shorter,

we adjust the orthodontic force to preserve the roots as much as possible.

The reason is that the longer the tooth root length,

the more important it is for the tooth’s lifespan!

What symptoms occur if the roots get shorter??

It may not be significant at first,

but if it is not managed continuously, the gum bone can deteriorate and the teeth may become loose~

Because the part holding them in place is shorterㅠㅠ

Among human teeth, the canine has the longest root,

and even when other teeth are extracted, the canine is not easily pulled out~~

(it tends to survive to the end because the root is long)

Therefore, even if the roots have become shorter,

management is more important than worrying about whether they will get shorter any further!

If you are aware of it, management is essential!!

Through regular scaling,

make sure the gum bone does not go down any further~

Root resorption during orthodontic treatment is common, but in most cases it is minimal. Concerned About Shortening Tooth Roots and Root Resorption During Orthodontic Treatment. image 5 250103 The canine has the longest length

.

We are constantly monitoring and preparing for it!

If you have any questions or symptoms that worry you,

please consult a nearby dental clinic at any time.

If you have more questions, please leave a comment or contact us!

| In compliance with Article 56, Paragraph 1 of the Medical Service Act, this post was written directly by Seoul Bardi Dental Clinic for the purpose of providing medical information and promoting the clinic. The information provided is for reference only, and for an understanding of symptoms and accurate management methods, please visit a medical institution and receive guidance from medical professionals. All procedures/surgeries performed at the dental clinic may involve possible risks depending on the individual (inflammation, bleeding, swelling, etc.). Please make decisions after sufficient consultation with medical professionals in advance. The treatment cases in this post were photographed with the consent of patients who completed treatment at our clinic, and the before-and-after photos were taken under the same conditions. |

#orthodontics #rootresorption #shorteningtoothroots

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