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What are the Different Types of Dental Fillings and Their Benefits?

We’ve all been there. Sitting in the dentist’s chair, hearing the dreaded news that we have a cavity that needs filling. But have you ever stopped to think about the options available to you when it comes to dental fillings? What are the different types of dental fillings, and what are their benefits? Dive in with us as we explore this essential aspect of dental care.

Dental fillings serve a straightforward yet vital purpose: to restore the form and function of a tooth damaged by decay or trauma. Not all fillings are the same, though. Depending on your specific needs, budget, and aesthetic desires, your dentist will suggest the best type for you. But first, let’s familiarize ourselves with the available options.

The Different Types of Dental Fillings

1. Amalgam Fillings:


Often referred to as silver fillings, amalgam fillings are a mixture of mercury, silver, tin, and copper. They have been used for over a century and are known for their durability.


They are long-lasting, affordable, and resistant to wear. Ideal for molars and high-pressure chewing areas.

2. Composite Fillings:


Also known as filled resins or composites, these fillings are made of a type of plastic mixed with fine glass particles. They can be closely matched to the color of your existing teeth.


Aesthetically pleasing due to their natural appearance. They bond directly to the tooth, providing further support.

3. Ceramic Fillings:


Typically made of porcelain, ceramic fillings are both durable and aesthetically pleasing.


They are resistant to staining and can last more than 15 years, making them more enduring than composite fillings. They also offer a natural appearance.

4. Glass Ionomer Fillings:


These fillings are a blend of glass and acrylic and are used in cases where the decay is below the gum line or on young children.


They release fluoride, which can help protect the tooth from further decay. However, they’re less durable than other types, typically lasting about five years.

5. Gold Fillings:


Comprised of a gold alloy, these fillings are made in a laboratory and then cemented into place.


Highly durable, gold fillings can last over two decades. They’re also biocompatible, meaning they’re well-tolerated by the body.

6. Resin Ionomer Fillings:


These are a hybrid between composite resins and glass ionomer fillings, consisting of glass-filled resin that sometimes also contains fluoride. They can be used as a liner or as a restorative material.


Resin ionomer fillings release fluoride, aiding in preventing further tooth decay. They also bond well to the tooth structure and are tooth-colored, offering a more aesthetically pleasing finish than some other options. They are typically used in areas not subject to heavy chewing.

7. Porcelain (Inlay/Onlay) Fillings:


Also called inlays or onlays, these fillings are custom-made in a dental laboratory and then bonded to the tooth by the dentist. They can cover the cusps of the tooth or fill in a cavity.


Porcelain fillings are similar to ceramic fillings but are often more customized to the patient’s tooth structure. They are resistant to staining, match the natural tooth color, and are quite durable, often lasting many years without signs of wear.

8. Base or Liner Fillings:


These are typically made of calcium hydroxide or zinc oxide eugenol. They are placed in the bottom of a deep tooth cavity to provide a protective layer between the dental pulp (nerve) and the filling material.


Base or liner fillings act as a protective barrier, safeguarding the nerve from potential damage or irritation, especially if the decay was close to the pulp. They can provide relief from sensitivity and protect the nerve from temperature fluctuations.

Choosing the Right Filling: Things to Consider

Choosing the best filling isn’t just about aesthetics; it involves considering several factors:

1. Location of the Cavity: 

Some fillings are better suited for front teeth, while others are ideal for back teeth that experience more pressure.

2. Extent of Repair: 

Larger cavities might require more durable fillings like gold or amalgam.

3. Cost: 

Some fillings, like gold, can be more expensive than others.

4. Aesthetic Concerns: 

For cavities in the front teeth, tooth-colored fillings like composite or ceramic might be preferred.

5. Allergies: 

Some people might be allergic to certain materials used in fillings, such as mercury in amalgam fillings.

Maintaining Your Dental Fillings

To maximize the lifespan of your fillings and prevent future cavities:

1. Regular Oral Hygiene:

Practice: Brushing your teeth at least twice a day and flossing once daily removes plaque, prevents decay, and helps keep the area around the filling clean and healthy.

Benefit: Ensures the longevity of the filling and prevents further dental complications.

2. Avoid Excessive Pressure:

Practice: Try not to grind or clench your teeth. If you have a habit of doing so, especially during sleep, consider getting a mouthguard.

Benefit: Prevents the fillings from cracking, chipping, or wearing down prematurely.

3. Be Cautious with Extreme Temperatures:

Practice: Avoid consuming very hot and very cold foods/beverages simultaneously. For instance, sipping hot coffee immediately after eating ice cream can cause rapid contraction and expansion of the filling material, which might weaken or crack it.

Benefit: Preserves the structural integrity of the filling.

4. Limit Sugary and Acidic Foods:

Practice: Minimize consumption of candies, sodas, and citrus fruits. If consumed, rinse your mouth with water afterward.

Benefit: Reduces the risk of cavities forming near or around the filling.

5. Regular Dental Check-ups:

Practice: Visit your dentist at least twice a year for routine check-ups and cleanings.

Benefit: Allows for early detection of any issues with your fillings and ensures they remain in optimal condition.

6. Avoid Sticky Foods:

Practice: Foods like caramel, taffy, and other sticky candies can pull at fillings, especially if they are new.

Benefit: Ensures that the fillings remain securely in place.

7. Refrain from Using Teeth as Tools:

Practice: Avoid using your teeth to open packages, cut threads, or bite nails.

Benefit: Prevents undue pressure on the fillings, which could lead to chipping or cracking.


When it comes to answering the question, “What are the different types of dental fillings and their benefits?”, there’s a wealth of information to consider. From durable amalgams to natural-looking composites, the choices are vast. However, with knowledge on your side and a trusted dentist to guide you, you can confidently make an informed decision that suits your dental needs.