Recurrent cavities—also called secondary caries—occur when decay returns around the margins of an existing filling or restoration. Because the tooth already has prior dental work, treating recurrent cavities may require more complex care than a primary filling. In Korea, a range of treatment options is available, and costs vary depending on the extent of decay, the material used, and the method chosen.



What Are Recurrent Cavities?

Recurrent cavities develop at the edges of existing restorations, like fillings or crowns, when bacteria infiltrates the junction between the tooth and the restoration. They can lead to sensitivity, pain, and further structural weakening if left untreated. Early detection through dental exams and X-rays helps prevent more extensive procedures.

Common Treatment Options and Price Range

1. Replacement Composite Resin Fillings

If the recurrent cavity is limited to a small area, the old restoration may be removed and replaced with tooth-colored composite resin.

Typical cost range: ₩100,000 – ₩300,000 per surface

This is one of the most common and affordable options for minor recurrent decay.

2. Replacement Silver (Amalgam) Fillings

In cases where silver fillings were previously placed and recurrent decay appears, the filling may be replaced.

Typical cost range: ₩50,000 – ₩150,000 per surface

Although less aesthetic, amalgam replacements are sometimes chosen for molars where appearance is less critical.

3. Porcelain or Ceramic Inlays/Onlays

If the cavity involves a larger restoration, replacing it with a custom-made porcelain or ceramic inlay/onlay may be recommended.

Typical cost range: ₩500,000 – ₩1,800,000 per tooth

Inlays and onlays offer improved strength and aesthetics.

4. Dental Crowns

When damage from recurrent cavities affects a large portion of the tooth, a crown may be necessary to restore function and durability.

Typical cost range: ₩800,000 – ₩2,000,000 per tooth

Ceramic, zirconia, or metal-ceramic crowns are commonly used depending on clinical needs and patient preference.

5. Root Canal Therapy + Restoration

If recurrent decay reaches the pulp (nerve) of the tooth, root canal therapy followed by a crown or other restoration may be needed.

Typical costs:

• Root canal therapy: ₩200,000 – ₩600,000 per canal
• Crown: ₩800,000 – ₩2,000,000 per tooth

The total fee varies based on how many canals are involved and the type of crown selected.

Factors That Influence Cost

Prices for treating recurrent cavities can vary based on:

• Extent of Decay: Larger recurrent cavities require more extensive restorations.
• Restorative Material: Premium ceramics and advanced materials cost more than basic resin or amalgam.
• Clinic Location: Clinics in Seoul or premium districts may charge higher fees.
• Dentist Expertise: Specialists in restorative or cosmetic dentistry may have higher pricing.
• Additional Procedures: Microabrasion, gum treatment, or core build-up may be needed.

Insurance Coverage in Korea

Basic restorative treatment for recurrent cavities—such as composite or amalgam fillings and root canal therapy—is often partially covered by Korean National Health Insurance when done for medical necessity. However, premium options like porcelain/ceramic restorations and cosmetic upgrades usually require out-of-pocket payment.

Coverage varies by case and policy; patients should verify specifics with both their clinic and insurer before treatment.

Why Treatment Costs Vary

Recurrent cavity treatment pricing is not “one size fits all.” Different factors contribute to cost differences:

• Restoration size and location
• Tooth condition and need for additional support
• Choice of material (esthetic vs functional)
• Complexity of removing old restorations

Your dentist will recommend the most appropriate method based on clinical needs and your goals for durability, appearance, and budget.

Conclusion

Treating recurrent cavities in Korea ranges from approximately ₩100,000 for simple filling replacements to over ₩2,000,000 for crowns and combined therapies. Partial insurance coverage often applies for medically necessary procedures, but premium restorations and cosmetic options are usually out of pocket. Discussing options with your dentist ensures you receive the most effective and value-oriented treatment for both function and long-term oral health.