Repeat root canal treatment—also called endodontic retreatment—is needed when a previous root canal fails to resolve infection, pain returns, or persistent decay/complications develop inside the tooth. Because retreatment involves removing existing root canal filling material, cleaning and disinfecting again, and resealing the canals, it is more complex than initial therapy. In Korea, pricing reflects this added complexity, the tooth’s anatomy, and the clinic’s standards.



Typical Price Range

In Korean dental clinics, repeat root canal treatment generally costs more than the initial procedure. Typical price ranges are:

₩350,000 – ₩800,000 per tooth

The broad range accommodates differences in tooth type and treatment difficulty:

• Front teeth (single canal): Lower end
• Premolars (two canals): Mid-range
• Molars (three or more canals): Higher end

Factors That Influence Pricing

Several elements affect the cost of repeat root canal treatment:

• Number of Canals: More canals require more time and materials.
• Previous Treatment Condition: Removing old filling materials and navigating obstacles increases complexity.
• Tooth Anatomy: Curved, calcified, or blocked canals are harder to clean.
• Imaging Needs: CBCT or advanced imaging may be recommended and billed separately.
• Dentist Expertise: Endodontic specialists typically charge higher fees than general dentists.
• Clinic Location: Clinics in major metropolitan or premium districts may have higher pricing.

What Makes Retreatment More Costly?

Repeat root canal therapy involves:

• Removing old gutta-percha (root canal filling material)
• Accessing difficult canal anatomy
• Cleaning and reshaping channels that may be blocked or curved
• Re-sealing and filling with new material

These steps take more time and require precision instruments, contributing to higher costs.

Insurance Coverage in Korea

When retreatment is performed for medical necessity—such as ongoing infection, pain, or abscess—parts of the treatment may be partially covered by Korean National Health Insurance. Coverage is determined by clinical need and insurance policy rules.

Advanced tools, specialist fees, and optional imaging are typically out of pocket.

Patients should confirm specifics with both the clinic and their insurer prior to treatment.

Additional Costs to Consider

The retreatment fee usually covers the endodontic portion only. Additional costs may include:

• Initial consultation and diagnostics
• 3D imaging (CBCT), if used
• Temporary or permanent restoration after treatment
• Crown placement or other protective restoration
• Follow-up visits

These are typically billed separately from the root canal retreatment fee.

Repeat Root Canal vs Extraction

While extraction may seem simpler, saving the natural tooth through retreatment often prevents future bone loss, maintains chewing function, and avoids the need for replacements such as implants or bridges, which carry their own costs.

A careful evaluation by your dentist helps determine whether retreatment or extraction is the best option based on long-term prognosis.

Conclusion

Repeat root canal treatment in Korea typically ranges from ₩350,000 to ₩800,000 per tooth, depending on tooth type, canals involved, and treatment complexity. Partial national health insurance coverage may apply for medically necessary cases, but advanced imaging, specialist fees, and premium materials are generally out of pocket. For accurate pricing and treatment planning, consult directly with your dentist based on your specific dental condition.