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Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated]

Seoul DIA Dental Clinic · 서울디아치과의원 · December 13, 2025

Hello. Mokgok Station Seoul Dia Dental Clinic is a place that never overlooks even small changes in your mouth. In the previous series, Why teeth crack What symptoms appear How tre...

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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 DIA Dental Clinic

Original post date: December 13, 2025

Translated at: April 20, 2026 at 1:47 PM

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

Hello.

Mokgok Station Seoul Dia Dental Clinic is a place that never overlooks even small changes in your mouth.

In the previous series,

  1. Why teeth crack

  2. What symptoms appear

  3. How treatment changes depending on the depth of the crack

we explained everything step by step.

And today, in the final Part 4,

we cover the most important topic

and one of the questions that is most often overlooked.

“What happens if a cracked tooth is left alone?”

Because it may look fine on the outside

and the pain may come and go,

many people think,

“Maybe I can just watch it a little longer?”

and leave it untreated.

But a crack in a tooth

is never a problem that simply stays as it is.

As time passes, it almost always progresses to the next stage.

Problems That Occur When a Cracked Tooth Is Left Untreated

  1. A hairline crack becomes a fissure, and a fissure becomes a fracture

Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated] image 1

Mokgok Station Dental Clinic_Case where a hairline crack led to a fracture

A crack in a tooth usually starts as a hairline crack thinner than a strand of hair.

At this stage, it may only cause occasional sensitivity,

or a sharp feeling only when biting,

so it is easy to dismiss it.

But the problem is that every time you chew,

the crack opens a little more.

Teeth are used about 2,000 to 3,000 times a day!

If you keep chewing with a cracked tooth,

the hairline crack can develop into a fissure and eventually

is very likely to lead to a fracture.

  1. The scope of treatment changes dramatically

Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated] image 2

Mokgok Station Dental Clinic_Cracked tooth treatment

If a tooth crack is found early,

most cases can be managed without major treatment.

Depending on the condition,

reinforcement with resin or an inlay may be enough to protect the tooth.

But if it is left untreated, the situation changes.

As the crack deepens,

a crown becomes necessary,

and if the nerve is damaged,

a root canal treatment followed by a crown is needed.

In severe cases, extraction may even be required.

  1. Nerve damage changes the pattern of pain

Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated] image 3

Mokgok Station Dental Clinic_Tooth pain

As the crack gets deeper

and reaches close to the nerve,

the nature of the pain changes.

At first, it may only feel like a brief sharp pain when biting.

As it progresses further,

you become especially sensitive to cold water or hot food,

and then a throbbing pain remains even after eating.

When it becomes severe,

you may feel pain even while lying still at night.

The statement, “It was fine yesterday, but suddenly it started hurting,”

is often actually a sign that a quietly progressing crack

has passed its limit.

  1. If the crack reaches the root, it becomes difficult to save the tooth

Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated] image 4

Mokgok Station Dental Clinic_Root fracture

The most unfortunate situation is

when the crack extends all the way to the tooth root (root of the tooth).

At this stage,

pain may differ depending on the direction of chewing,

the gums may swell or pus may form,

and even after placing a crown, the pain often continues.

That is because

a crack in the root

keeps opening no matter how much it is covered.

At this stage,

it is difficult to preserve the natural tooth,

and extraction followed by an implant or bridge is often the next step.

Key summary of today’s post!

  1. A tooth crack does not heal on its own over time

  2. The longer it is left untreated, the more it progresses from hairline crack → fissure → fracture

  3. Missing the treatment window greatly increases the extent and cost of treatment

  4. If it reaches the nerve or root, preserving the natural tooth becomes difficult

  5. Early diagnosis is the most reliable way to save a tooth

Mokgok Station Dental Clinic_“Thinking It’ll Be Fine Only Makes It Worse” [4. Problems Caused by Leaving a Cracked Tooth Untreated] image 5

Mokgok Station Seoul Dia Dental Clinic

If you only feel a sharp pain when chewing,

or discomfort only in a certain direction,

your tooth may already be sending small warning signs.

In this situation, the best choice is not

“Let’s endure it a little longer,”

but rather

“Let’s check it once.”

With tooth cracks,

if you check them just a little earlier,

there are far more teeth that can be saved.

If you are worried about a cracked tooth,

please do not put it off and contact Mokgok Station Seoul Dia Dental Clinic.

We will guide you to the most appropriate next step for your current condition without burden.

[ This post has been written in accordance with the Medical Service Act for the purpose of providing correct information about dental surgery and procedures. Infection and side effects may occur after surgery, so you should decide on surgery (procedure) only after sufficient consultation with a skilled medical professional. ]

[ Mokgok Station Seoul Dia Dental Clinic Tooth Crack (Fissure) Series ]

  1. Why teeth crack

  2. Symptoms that appear when a tooth cracks

  3. Treatment by the extent of the crack or fracture

  4. Problems caused by leaving a cracked tooth untreated

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