Root Canal Treatment to Save Your Tooth in Dongdaemun Seoul
Persistent toothache, sensitivity or pain when biting can mean the nerve inside the tooth is inflamed or infected. Root canal treatment removes it and preserves your natural tooth, explained step by step in English.
Send a photo or X-ray and our team usually replies within 24 hours.

Where can I get root canal treatment in English in Dongdaemun, Seoul?
Dongdaemun SeoulOneTop Dental Clinic provides root canal treatment on the 5th floor of 1050 Jegi-dong, Dongdaemun-gu, a 2-minute walk from Jegi-dong Station Exit 2 on Subway Line 1. The infected or inflamed pulp is removed, the canals are cleaned and shaped, then sealed to help prevent further infection.
Your dentist reviews your symptoms and takes dental X-rays, then explains in English whether a root canal is needed, how many stages to expect, and whether a filling or crown should protect the tooth afterward.
Root canal treatment options
Front teeth and molars have different root anatomy, so the approach is planned for each tooth.
Standard Root Canal Treatment
During conventional root canal treatment, the infected or inflamed pulp is removed, the root canals are cleaned and shaped, and the canals are sealed to help prevent further infection.
Root Canal Treatment for Front Teeth
Front teeth generally have a different root and canal structure from back teeth.
Root Canal Treatment for Molars
Molars can have multiple canals and more complex anatomy.
Root Canal Treatment Followed by a Dental Crown
A tooth that has undergone root canal treatment may require additional structural protection, particularly when significant tooth structure has been lost.
A root canal can help with
- Deep dental decay
- Pulp inflammation
- Dental pulp infection
- Severe toothache
- Prolonged sensitivity to hot or cold
- Pain when biting or chewing
Signs you may need one
- Persistent tooth pain
- Sensitivity that lasts after hot or cold
- Pain when biting or chewing
- Swelling around the tooth
- Deep decay
- A damaged, fractured or injured tooth
How root canal treatment works
-
Consultation & X-rays
The dentist reviews your symptoms and uses imaging to check the roots, canals and surrounding bone.
-
Local anesthesia
The area is numbed so you stay comfortable during the procedure.
-
Pulp removal
The dentist removes the inflamed or infected pulp from inside the tooth.
-
Canal cleaning & shaping
The root canals are cleaned and shaped to remove bacteria.
-
Filling & sealing
The canals are filled and sealed to help stop bacteria from returning.
-
Filling or crown & follow-up
A filling or crown restores the tooth, and follow-up visits check healing.



Precise restorations, made on site
- 3D
Digital imaging and scans X-rays, 3D CT and digital impressions show exactly what each tooth needs.
- LAB
In-house dental lab Crowns, bridges, inlays and dentures are made on the same floor, so you wait less.
- MAT
Tooth-colored materials Ceramic, zirconia and composite options, matched to your natural teeth where suitable.
- ZZ
Sleep sedation available For dental anxiety or longer procedures, with a private 1:1 recovery room.
Care led by board-certified dentists
Each treatment is handled by the dentist certified in it, and the whole team reviews patient records together every morning.



Root Canal Treatment for foreigners in Seoul
Expats & students
Korean National Health Insurance (NHIS) accepted for covered treatments, plus evening appointments until 8 PM on Wednesdays and Fridays.
Dental travelers
Send X-rays before you fly. Our in-house lab helps fit treatment into a shorter stay.
Broken tooth or pain
Message us on WhatsApp with a photo. We will tell you how soon to come in.
Does root canal treatment hurt?
Local anesthesia is typically used to numb the area, so most patients feel pressure rather than pain during treatment. Treatment is meant to relieve pain caused by pulp inflammation or infection.
How many visits does a root canal take?
It depends on the tooth and the infection. Molars can have several canals and more complex anatomy. Your dentist explains the expected stages after the X-ray.
Do I need a crown after a root canal?
Often, especially when a lot of tooth structure has been lost. Depending on what remains, a filling or crown is recommended. Read about dental crowns.
Is it better to remove the tooth?
When the tooth is restorable, root canal treatment preserves your natural tooth and can reduce the need for extraction. Your dentist explains both options if the tooth cannot be saved.
Do the dentists speak English?
Yes. Consultations and treatment explanations are given in English, with support in Chinese, Vietnamese, Russian and Mongolian.
Where is the clinic and when is it open?
5F, 1050 Jegi-dong, Dongdaemun-gu, Seoul, a 2-minute walk from Jegi-dong Station Exit 2 on Subway Line 1. Open Mon, Tue and Thu 9:30 AM–6:30 PM, Wed and Fri until 8:00 PM, and Saturday until 2:00 PM.
Toothache? Get seen in English
Describe your symptoms or send a photo or X-ray. We'll reply with what may be going on and when we can see you.





