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Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression

Seoul DIA Dental Clinic · 서울디아치과의원 · March 20, 2026

Hello. 3 minutes on foot from Exit 3 of Magok Station, We are Seoul Dia Dental Clinic, a clinic that does not overlook even small changes in the mouth. ​ In the previous post, we e...

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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: March 20, 2026

Translated at: April 19, 2026 at 11:00 PM

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

Hello.

3 minutes on foot from Exit 3 of Magok Station,

We are Seoul Dia Dental Clinic,

a clinic that does not overlook even small changes in the mouth.

In the previous post,

we explained when root canal treatment is needed for pulpitis.

If you haven’t seen it yet,

you may want to read Part 4 first.

And now, today’s topic.

Now is about the time

when this part starts to become a question.

As you’ve been reading so far,

you may have thought this at least once.

“Then... what happens if I just leave it alone?”

So today,

we’ll go over this part clearly.

Then,

shall we take a look together at what happens when pulpitis is left untreated?

Problems Caused by Leaving Pulpitis Untreated

  1. It starts with pain that is bearable at first

Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression image 1

Magaok Station Dental Clinic_Dentin hypersensitivity

Pulpitis usually starts like this.

“Is it a little sensitive?”

“It throbs sometimes?”

“I guess it’s okay at this level...”

So many people tend to brush it off.

You can still go about daily life.

It feels bearable.

But here’s the key point.

This period is the most important stage.

Why?

Because at this stage,

there is still a possibility that it can be reversed.

So this stage is an important timing

that should not be taken lightly.

  1. As time passes, the nature of the pain changes

Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression image 2

Magaok Station Dental Clinic_Toothache that gets worse at night

As a little time passes,

the pain gradually changes in character.

At first, you only notice it when there is a trigger,

but now it throbs even when you’re still,

and it may even hurt more at night for no clear reason.

“The pain has been going on for so long—why?”

The moment you think that,

you have already moved one step further.

This is not just simple sensitivity.

It is a sign that the nerve is being affected.

In other words, when the pain changes,

it means the condition is changing too.

  1. If it progresses further, it becomes a “not painful, but more dangerous” state

Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression image 3

Magaok Station Dental Clinic_Pulp necrosis

If it progresses a little more,

you may reach a moment where you think, “It doesn’t hurt anymore?”

“You mean it got better?”

It’s easy to think that way,

but here, you need to change your perspective once.

The reason the pain has decreased

may not be because it improved,

but because the nerve is losing function.

Simply put,

the nerve inside the tooth may be gradually weakening

and leading to pulp necrosis (a state in which the nerve dies).

So it is not that it has become “less painful,”

but that it has changed into a state where you no longer feel it.

The problem starts here.

While the pain decreases,

the inflammation does not stop,

and instead quietly spreads toward the root of the tooth.

As a result,

the gums swell,

pus forms,

pain appears when chewing,

and in severe cases, the face may swell as well.

From this point on,

it is no longer just a toothache,

but a condition that has progressed into inflammation around the root.

So at this stage,

you should not think, “It doesn’t hurt, so it’s fine.”

Rather, it may be a moment when the condition has progressed further because it no longer hurts.

  1. In the end, the scope of treatment becomes larger

Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression image 4

Magaok Station Dental Clinic_Root canal treatment

Eventually, if it gets to this point,

the scope of treatment becomes larger.

What could have ended simply at first

changes direction as time passes.

A situation that only needed cavity treatment

may at some point require root canal treatment,

may need retreatment,

and in severe cases, may even lead to tooth extraction.

Why does this happen?

Because pulpitis does not suddenly worsen all at once;

it has the characteristic of progressing quietly.

So rather than when it hurts,

when it feels vaguely uncomfortable,

that is the time to check it once.

That is the timing that determines whether pulpitis treatment becomes larger

or ends on a smaller scale.

Well, that’s all for today’s content.

How was it?

Did the toothache you thought you could “just endure” start to look a little different?

Let’s wrap up with a brief summary.

Pulpitis changes like this over time

  1. Sensitivity → brushed off as “I guess it’s fine”

  2. Throbbing pain → hurts more at night and becomes bothersome

  3. Pain decreases → not improved, but the nerve is weakening

  4. Root inflammation → swollen gums, pus, and expanding pain

Magaok Station Dental Clinic_5. What Happens If Pulpitis Is Left Untreated? Summary of the Pain Progression image 5

Magaok Station Seoul Dia Dental Clinic

There’s just one thing to remember here.

Rather than enduring it, check your current condition now.

That one moment

changes the scale of treatment

and creates an outcome that helps protect the tooth.

In the next post,

we’ll come back with information on how to prevent and manage pulpitis.

Wishing you a day of chewing well and smiling well.

This has been Seoul Dia Dental Clinic.

[ This post was written in accordance with the Medical Service Act for the purpose of providing accurate information about dental surgery and procedures. Infection and side effects may occur after surgery, so you should make your decision about surgery (or procedure) after thorough consultation with a skilled medical professional. ]

[Magok Station Seoul Dia Dental Clinic Pulpitis Series]

  1. Causes of pulpitis

  2. Symptoms of pulpitis

  3. Why pulpitis pain gets worse at night

  4. Pulpitis treatment (root canal treatment)

  5. Problems caused by leaving pulpitis untreated

  6. Prevention and early management of pulpitis

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