Types of Dental Fillings: The Complete Guide

Dental fillings are one of the most common dental treatments. But many people don’t realize there are several different types — and each comes with its own benefits, drawbacks, and ideal use cases.

In this guide, you’ll learn:

• The main types of dental fillings
• The pros and cons of each
• How long they last
• How to choose the right one

Let’s get started.

What Is a Dental Filling?

A dental filling is a material used to repair a tooth damaged by decay, cavities, or minor fractures.

After removing the decayed portion of the tooth, a dentist fills the area to restore:

• Tooth strength
• Normal chewing function
• Shape and appearance

The type of material used makes a big difference in durability, cost, and aesthetics.

Amalgam Fillings (Silver Fillings)

Amalgam fillings are made from a mixture of metals, including silver, tin, copper, and mercury.

Pros

• Very strong and durable
• Affordable
• Ideal for back teeth
• Can last 10–15 years or more

Cons

• Silver color is noticeable
• Contains mercury (considered safe by major health organizations but still debated)

Best For

Molars and areas exposed to heavy chewing pressure.

Composite Resin Fillings (Tooth-Colored Fillings)

Composite fillings are made from a mixture of resin and fine glass particles that match your natural tooth color.

Pros

• Natural appearance
• Bonds directly to the tooth
• Requires less removal of healthy tooth structure

Cons

• May wear down faster than metal
• Slightly more expensive than amalgam
• Typically lasts 5–10 years

Best For

Front teeth and visible areas of the mouth.

Ceramic Fillings (Porcelain Fillings)

Ceramic fillings are usually made from porcelain and often created in a dental lab.

Pros

• Highly aesthetic
• Stain-resistant
• Durable and long-lasting

Cons

• More expensive
• Usually requires two dental visits

Best For

Patients who prioritize appearance and long-term durability.

Glass Ionomer Fillings

Glass ionomer fillings are made from acrylic and a specific type of glass material.

Pros

• Releases fluoride to help prevent future decay
• Good option for children
• Useful near the gum line

Cons

• Less durable than composite or amalgam
• Shorter lifespan

Best For

Baby teeth, small cavities, and low-pressure areas.

Gold Fillings

Gold fillings are custom-made in a laboratory from gold alloy.

Pros

• Extremely durable
• Can last 15 years or longer
• Strong under chewing pressure

Cons

• Most expensive option
• Requires multiple visits
• Metallic appearance

Best For

Long-term restorations in back teeth.

How to Choose the Right Dental Filling

• The size of the cavity
• Location of the tooth
• Budget
• Cosmetic preference
• Longevity needs

If appearance matters most, composite or ceramic fillings are usually the best choice.

If strength and longevity are the priority, amalgam or gold may be better options.

Conclusion

There are five main types of dental fillings: amalgam, composite resin, ceramic, glass ionomer, and gold.

Each has specific advantages depending on durability, cost, and appearance. Understanding these differences helps you make an informed decision about your dental health.