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Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics]

Seoul DIA Dental Clinic · 서울디아치과의원 · July 22, 2025

Hello! This is Seoul Dia Dental Clinic, located at Exit 3 of Magok Station. ​ Did you have a nice weekend? The weather has been really all over the place lately. It suddenly pours...

AI translation notice

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: July 22, 2025

Translated at: April 20, 2026 at 4:12 PM

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

Hello!

This is Seoul Dia Dental Clinic, located at Exit 3 of Magok Station.

Did you have a nice weekend?

The weather has been really all over the place lately.

It suddenly pours with rain, and then it clears up again...

It’s a Monday morning that feels a bit up and down in both body and mind,

but Seoul Dia Dental Clinic is starting off energetically as always for your oral health!

Today is the day we bring you the grand final story of the root canal treatment series~

In Part 6, we covered the roles of the core and post*.

If you’re thinking, “What was that again…,” feel free to review it below first!

Now, with the post in place,

if you felt relieved and thought, “Phew~ it’s finally all over~”...

just a moment! There is still one real final step left.

That is the crown prosthesis.

The treatment called a ‘crown,’ which is placed like a crown,

is an essential finishing step after root canal treatment,

and the strongest shield for protecting the tooth.

So, why is this ‘final move’ essential?

From here, Seoul Dia Dental Clinic will explain it very easily!

Why do you have to get a crown prosthesis?

A tooth that has received root canal treatment

is no longer the same tooth it used to be, functionally or structurally.

There is no nerve, the nutrient supply has been cut off,

and the crown portion may already have been more than half removed.

What happens if you use it as is?

It breaks while chewing. Just like that.

So to protect this tooth from

‘chewing force,’ ‘temperature changes,’ and ‘external impact,’

a strong prosthesis, meaning a crown, must be placed.

  1. A tooth after root canal treatment is an ‘empty shell’

Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics] image 1

Magaok Station Dental Clinic_ A tooth with the inside hollowed out

What is root canal treatment?

It is a treatment that removes the nerve and blood vessel tissue inside the tooth.

Then what happens to the internal space?

It becomes like a hollow cylinder.

Even if it looks perfectly fine from the outside,

a hollow inside means a structure that cannot withstand impact.

That is why you need to place a strong cap, a crown, on top of it to protect the tooth from external forces.

  1. A tooth structure that has been reduced will ‘snap’ if used as is

Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics] image 2

Magaok Station Dental Clinic_ Tooth reduction

To perform root canal treatment, part or most of the tooth must be removed.

In particular, to access the pulp, the crown portion has to be opened widely.

But a tooth is a structure that gets chewed on hundreds of times every day in the mouth, right?

If it is used with only a small amount of tooth tissue remaining, the likelihood of it breaking or cracking is very high.

That is why it is essential to cover it with a crown and restore the tooth shape.

  1. Tiny gaps become a playground for bacteria

Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics] image 3

Magaok Station Dental Clinic_ Recurrence of inflammation after root canal treatment

After root canal treatment, the inside is carefully sealed

and the structure is reinforced with a core and post.

But over time, tiny gaps can form.

Through those gaps, bacteria, food debris, and bacteria in saliva

can infiltrate again, creating a risk of reinfection.

A crown also serves as a ‘lid’ that covers these tiny gaps,

so it is absolutely necessary to prevent infection.

  1. Treatment is not really finished until the crown is placed

Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics] image 4

Magaok Station Dental Clinic_ Crown

Even if the pain is gone after root canal treatment,

is it really necessary to go through the trouble of getting a crown too...

The answer is clear. Yes, of course you should.

The pain may have disappeared through root canal treatment,

but that tooth is just a structure that has lost its internal function.

Using it as is is similar to trying to get through winter without a boiler.

In other words, it will eventually break down after holding out for a while.

Material and shape should be determined through expert diagnosis

Just as not all teeth are shaped the same, not all crowns can be the same, right?

  • Which part of the mouth is the tooth in?

  • Is it exposed to a lot of chewing force?

  • Is aesthetics important?

  • Is there a high risk of fracture?

Depending on these conditions, the material and shape may differ, such as zirconia, PFM, gold, or ceramic.

At Seoul Dia Dental Clinic, we provide the most suitable prosthetic treatment plan through pre-treatment CT scans and oral scanner analysis,

as well as bite checks.

A one-shot summary of today’s key points!

  1. A tooth that has undergone root canal treatment is easy to break because its internal structure is weak.

  2. A crown protects the tooth from chewing force, temperature changes, and external impact.

  3. It also helps prevent reinfection through tiny gaps.

  4. The treatment is truly finished only after the crown is placed!

  5. Material selection is best decided through sufficient consultation with a specialist.

Thank you for reading the full root canal treatment series from Dia Dental Clinic in Magok-dong!

From why root canal treatment is needed,

to the treatment process, precautions, the core and post,

and today’s crown prosthetics!

A big round of applause to everyone who completed Seoul Dia Dental Clinic’s 7-part root canal treatment series! ^^

Magaok Station Dental Clinic_ “After root canal treatment, why do teeth have to be ‘covered’?” [7. The Importance of Crown Prosthetics] image 5

Magaok Station Dental Clinic_Dia Dental Clinic

Seoul Dia Dental Clinic goes beyond simple treatment

and provides care with the goals of ‘preserving natural teeth’ and ‘long-term use.’

A crown is the final piece of the puzzle.

Never leave it out!

We’ll be back next time with even more useful information.

This has been Dia Dental Clinic.

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

[ Magok-dong Dia Dental Clinic Root Canal Treatment Series ]

  1. Root canal treatment indications

  2. Root canal treatment process

  3. Precautions after root canal treatment

  4. Precautions after crown prosthetic treatment

  5. Why you should not stop root canal treatment halfway

  6. The need for a core and post

  7. The need for a crown prosthesis after root canal treatment

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