When your dentist says you need a filling, one of the first questions that comes to mind is: Which type of filling is best? Dental fillings come in different materials, each with its own benefits, durability, aesthetics, and cost. Understanding these options helps you make an informed, confident decision about your oral health.
This guide explains the most common types of dental fillings, how long they last, when each is recommended, and what you can expect during your treatment.
What Are Dental Fillings?
Dental fillings are restorative materials used to repair teeth affected by decay, cracks, or wear by replacing the damaged tooth structure with a durable, protective material.
Why Do Dentists Recommend Fillings?
- Stop active tooth decay
- Restore function and structure
- Prevent deeper infection and pain
- Improve long-term oral health
- Avoid the need for more complex treatments like crowns or root canals
Types of Dental Fillings
1. Composite (Tooth-Colored) Fillings
Overview:
Made from a mixture of resin and fine glass particles, composite fillings blend naturally with your tooth.
Benefits
- Matches natural tooth color
- Bonds strongly to tooth structure
- Ideal for front and back teeth
- Preserves more natural tooth
Considerations
- Slightly less durable than metal fillings
- Can stain over time
- Moderate cost
Best for: Small to medium cavities, patients wanting aesthetic results.
2. Amalgam (Silver) Fillings
Overview:
A highly durable filling material used for more than 150 years, made from a mix of metals including silver, tin, and copper.
Benefits
- Extremely strong and long-lasting
- Cost-effective
- Withstands heavy chewing forces
Considerations
- Noticeable silver color
- Requires more tooth removal
- Not used as commonly today
Best for: Molars, large cavities, patients needing a long-lasting and durable solution.
3. Gold Fillings
Overview:
Made from a gold alloy, these fillings are crafted in a dental laboratory and cemented into place.
Benefits
- Exceptional durability (can last 20+ years)
- Biocompatible
- Strong and wear-resistant
Considerations
- High cost
- Requires multiple visits
- Not tooth-colored
Best for: Patients seeking maximum strength and longevity.
4. Ceramic or Porcelain Fillings (Inlays/Onlays)
Overview:
Custom-made restorations often created with CAD/CAM technology and bonded to the tooth.
Benefits
- Highly aesthetic
- Stain-resistant
- Long-lasting
Considerations
- Higher cost than composite
- May require two visits unless CEREC same-day technology is available
Best for: Medium to large cavities, cosmetic-focused patients, molar repairs.
5. Glass Ionomer Fillings
Overview:
Made from acrylic and fine glass powder, these fillings release fluoride over time.
Benefits
- Fluoride release helps prevent further decay
- Ideal for children and non-load bearing areas
- Chemically bonds to tooth
Considerations
- Less durable than composite
- Not suitable for large cavities
Best for: Baby teeth, root cavities, patients with high cavity risk.
6. Resin Ionomer Fillings
Overview:
Similar to glass ionomer but strengthened with resin.
Benefits
- Fluoride release
- Better aesthetics than traditional glass ionomer
- Good for low-stress areas
Considerations
- Not as strong as composite
- May wear faster
Best for: Cervical lesions, root surfaces, cavities near the gumline.
How to Choose the Right Type of Filling
A dentist selects the right material based on:
- Size and depth of the cavity
- Location (front vs. back teeth)
- Bite pressure
- Aesthetic concerns
- Budget
- Age (children vs. adults)
- Decay risk
Your dentist will discuss options based on long-term oral health, not appearance alone.
How Long Do Dental Fillings Last?
- Amalgam: 10–15+ years
- Composite: 5–10 years
- Gold: 20+ years
- Ceramic: 10–15 years
- Glass Ionomer: 3–5 years
Conclusion
Understanding the different types of dental fillings helps you make an informed choice about your oral health. Each material has unique advantages, and the right option depends on your dental needs, aesthetic preferences, and long-term goals. A conversation with your dentist will ensure you receive a restoration that is durable, functional, and suited to your smile.
FAQs
1. Which dental filling lasts the longest?
Gold fillings typically last the longest, often more than 20 years.
2. Are composite fillings better than amalgam?
Composite looks more natural, but amalgam is more durable for heavy-bite areas.
3. Do fillings hurt?
Most fillings are painless with local anesthesia.
4. How long does it take to get a filling?
Usually 20–45 minutes, depending on size and location.
5. Can I eat after getting a filling?
Yes—composite sets immediately; amalgam needs a few hours to fully harden.
6. Are there white alternatives to metal fillings?
Yes—composite and ceramic fillings match natural tooth color.
7. How do I know if I need a filling?
Common signs include sensitivity, visible holes, or pain when chewing.
8. Can fillings fall out?
Yes, fillings can loosen due to decay, grinding, or biting hard foods.
9. Are dental fillings safe?
Yes—all FDA-approved materials used today are considered safe.
10. Is fluoride-releasing filling material good for children?
Yes—glass ionomer fillings are often used for pediatric dentistry.











