You Can Use Resin Instead of Getting a Crown After Root Canal Treatment

I had already finished the root canal treatment

and then saw the director’s post,

so I was really upset..

The director usually tries to avoid

root canal treatment as much as possible...

Now they say I need a crown,

but I’m so scared of filing down the tooth.

This was the first message the patient sent me on Naver TalkTalk.

The root canal treatment had already been completed at another dental clinic, and it was just before placing a crown on the upper right premolar.

Only after that did the patient see my post saying that after root canal treatment, resin can also be an option instead of a crown, and contacted me, saying they were upset.

Is there any option other than a crown?

The patient’s questions were these:

✅ I wonder whether root canal treatment was really necessary. ✅ I’m afraid of getting a crown because it feels like too much of the surface will be filed down. ✅ I’m worried whether it’s okay to finish with resin and whether it will break easily.

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"If it were me, I honestly think there may have been room to try something a little more conservative, but in that situation many dental clinics would choose root canal treatment. So I wouldn’t say it was a ‘wrong treatment’ just because root canal treatment was done."

I said.

And I added something important. “I need to see the current condition in person to judge accurately. I’ll look for the best way to preserve the tooth as much as possible.”

After the TalkTalk consultation ended, the patient visited the clinic the very next day.

The root canal treatment had been done well; the issue was what came after.

When the patient came in and I checked, the upper right premolar had already finished root canal treatment, and the inside was sealed with temporary material.

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It wasn’t a matter of “the root canal treatment ruined the tooth,” but rather “how should we finish it now?”

The chewing surface had already been removed to some extent, but the rest of the tooth was still reasonably intact.

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So I made this judgment: ‘There’s no need to remove any more. With this amount, we can sufficiently restore it with a resin buildup.’

(*This does not apply in exactly the same way to every case, and diagnosis may differ under a professional judgment depending on the condition of the tooth.)

We decided on a ‘resin buildup’ instead of a crown

I explained it like this: “Rather than removing any more tooth structure, I think it would be better to remove the existing filling material and rebuild the missing chewing surface and walls with resin — in a form similar to an overlay, called a resin buildup.”

The part the patient was worried about was, of course, this:

“But after root canal treatment,

isn’t the tooth weakened,

so if you finish it with resin,

won’t it break easily?”

At that point, I said exactly what I always say. It’s not that resin breaks easily; it’s that things break when the bonding and design are not done properlyㅎㅎ

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In fact, many people have had fairly large areas treated with resin and have used them well for a long time.

🔽If you look at the post below, even a large molar

was treated with resin,

and it is still being used well 🔽

In this condition, I felt that resin was the choice ‘for the tooth and for the patient.’ (The patient was still in their 20s.. so we had to preserve as much as possible!)

The patient said they wanted resin if it meant saving the tooth.

The remaining tooth structure was left as is, and only the shape was restored.

We started treatment right away.

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We carefully removed the existing filling material and temporary material, cleaned up the boundary between the decay and the material, and decided to first fill the inner base on two sides with an insurance-covered material (GI) to create a foundation.

After that, we reconstructed the shape (cusps and walls) with a resin buildup that broadly covered the entire chewing surface, along with a core procedure to fill the opening made for the root canal treatment.

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In simple terms, you can think of it as building a solid foundation on the inside and restoring the tooth’s original shape and function with resin on the outside.

When is a crown needed after root canal treatment?

There is one thing you should not misunderstand here. It is not that “you don’t need a crown after root canal treatment.”

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There are definitely cases where a crown is more appropriate, such as when the tooth is broken too much, when almost no walls remain, or when the area is subject to strong biting forces.

However, if it is a premolar like this patient’s, which plays a smaller role in chewing, has a fairly preserved tooth shape, and has not yet been reduced to an irreversible extent, then finishing while preserving the tooth with resin is a perfectly reasonable option.

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The important thing is

my tooth’s current condition.

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Sometimes a crown is needed, and sometimes a resin buildup is enough.

In the past, because of limitations in materials and bonding techniques, “root canal treatment = crown” was used almost like a rule.

But now, the materials, techniques, and philosophy have all changed a lot.

So when I look at a tooth, I always think like this:

'In this situation, what is the way

to let it chew well

without removing more tooth structure?'

When I meet a patient like in this case, who strongly wants to preserve the tooth, I also end up looking for a more conservative solution more persistentlyㅎㅎ

Because I practiced while keeping this philosophy,

I was given the opportunity to give a lecture on minimally invasive dentistry in January😊

If you believed that you must always go with a crown, it may be worth getting a consultation from a conservative perspective to see what options are available for your tooth condition.

This has been Director Hyeon-su So of Jaejurooun Dental Clinic. Thank you.

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