Dental Fillings in Korea: Resin vs Amalgam

Dental fillings are one of the most common treatments foreigners receive at Korean dental clinics. If you’re told you need a filling, you’ll usually be given two main options: resin (composite) fillings or amalgam (silver) fillings.

While both are used in Korea, resin fillings are now far more common, especially for adults and international patients. This guide explains the differences clearly so you know what to expect and how to choose.

Resin (Composite) Fillings in Korea

Resin fillings are tooth-colored composite materials designed to blend naturally with your teeth.

Why Resin Fillings Are Popular in Korea

• Natural appearance (matches tooth color)
• No visible metal
• Bonds directly to the tooth
• Preserves more natural tooth structure
• Widely used for front and back teeth

Most Korean dental clinics recommend resin by default, especially for visible teeth or moderate cavities.

Durability

• Typically lasts 5–10 years
• Longevity depends on bite force, cavity size, and oral hygiene
• May wear faster in heavy grinders

Procedure Time

• Usually completed in one visit
• Takes about 20–40 minutes per tooth

Cost in Korea

• Commonly around ₩80,000–₩150,000 per tooth
• Usually not covered by insurance for adults
• Still affordable compared to Western countries

Amalgam (Silver) Fillings in Korea

Amalgam fillings are made from a metal alloy and have been used for decades.

When Amalgam Is Still Used

• Large cavities in back molars
• Situations where durability matters more than appearance
• Pediatric or insured treatments

However, many modern clinics now limit amalgam use, especially for adults.

Durability

• Very strong and long-lasting
• Can last 10–15 years or more
• Tolerates heavy bite force well

Appearance

• Silver/gray color
• Highly visible when smiling or laughing
• Often avoided for cosmetic reasons

Cost in Korea

• Generally cheaper than resin
• Often covered by Korean National Health Insurance for eligible patients
• Less commonly offered to tourists unless requested

Safety Concerns: Is Amalgam Safe?

Amalgam contains mercury, which often worries foreign patients.

What to know:

• Dental amalgam is considered safe by international dental standards
• Korean dentists follow global safety guidelines
• However, many clinics prefer resin due to patient preference and aesthetics

If you are concerned about mercury or plan future cosmetic dental work, resin is usually recommended.

What Korean Dentists Usually Recommend

In practice:

• Resin fillings are recommended for most adults and foreigners
• Amalgam fillings may be suggested for:
• Large cavities in back teeth
• Budget-focused or insured patients
• Children or temporary solutions

If a dentist recommends amalgam, it’s reasonable to ask:

• “Can resin be used instead?”
• “Is resin suitable for this cavity size?”

Korean dentists are generally open to discussing options.

Resin vs Amalgam: Which Is Better for Foreigners?

For most foreign patients in Korea:

• Resin is preferred for appearance and comfort
• Cost difference is relatively small
• Procedure is fast and same-day
• Easier to integrate with future crowns or cosmetic work

Amalgam may still make sense if:

• The cavity is very large
• Bite force is extremely strong
• Cost or insurance coverage is the main concern

Can Old Amalgam Fillings Be Replaced in Korea?

Yes. Many foreigners choose to replace old amalgam fillings with resin while in Korea.

Common reasons:

• Cosmetic improvement
• Cracks or leakage around old fillings
• Preparation for crowns or veneers

Replacement is usually done in one visit, unless the cavity is deep.

What to Ask Before Getting a Filling in Korea

Before treatment, ask:

• Which filling material is recommended and why
• Total cost per tooth
• How long the filling is expected to last
• Whether local anesthesia is included

Clear communication helps avoid surprises.

Final Takeaway

In Korea, resin (composite) fillings are now the standard choice, especially for adult and international patients. They offer better aesthetics, conservative tooth preservation, and reasonable durability at an affordable cost.

Amalgam fillings are still used selectively but are far less common than in the past.

If you’re visiting a Korean dentist, you can expect:

• Fast, same-day treatment
• Clear material options
• Modern filling techniques
• Transparent pricing