Hadfield Family Dental

What’s Actually In a Dental Filling?

Everything You Wanted to Know About Fillings (But Were Too Afraid to Ask)

Dental fillings are common treatments, but what exactly are they made of and why are they needed? At Hadfield Family Dental, we’re here to explain everything about fillings — from the materials used to the process, so you can feel informed and at ease.

Why Are Fillings Needed?

Teeth can develop decay (cavities) due to plaque buildup, sugary diets, or poor oral care. If left untreated, decay can lead to infection or tooth loss. A filling restores the damaged area, preventing further complications.
You might need a filling if you experience:
  • Tooth sensitivity to hot, cold, or sweet food
  • A visible hole or dark spot on a tooth
  • Sharp pain when biting
  • Food getting stuck in one particular spot
  • A tooth that feels rough or chipped

What Are Fillings Made From?

There are various materials used for fillings. The choice depends on cavity location, damage extent, and your preferences:

1. Composite Resin (Tooth-Coloured Fillings)

There are various materials used for fillings. The choice depends on cavity location, damage
extent, and your preferences:

    • Pros: Matches your natural tooth shade, bonds well, requires less drilling
    • Cons: May not last as long in large back molars, slightly more expensive
    • Lifespan: 5–10 years

2. Amalgam (Silver Fillings)

Made from a mix of metals including mercury, silver, tin, and copper, amalgam fillings are known for their strength and longevity. 

    • Pros: Very durable, affordable, resistant to wear
    • Cons: Noticeable silver colour, more tooth removal required
    • Lifespan: 10–15 years

3. Glass Ionomer

These are used mostly in baby teeth or small fillings. They release fluoride, which helps protect the tooth from further decay.

    • Pros: Releases fluoride, good for children, easy to place
    • Cons: Less durable, doesn’t match tooth as well
    • Lifespan: Around 5 years

4. Gold or Ceramic (Porcelain) Fillings

Used more in crowns or inlays, and are usually reserved for more complex restorations. 

    • Pros: Strong and long-lasting
    • Cons: Expensive
    • Lifespan: Gold 15+ years, Ceramic 10–15 years 

What’s the Process of Getting a Filling?

It’s fast and simple!
We’ll numb the area, gently remove the decay, place the filling material, then shape and polish it. Once the numbness wears off, you can eat as normal — just avoid hard or sticky foods for a few hours.

Are Fillings Safe?

Yes — today’s filling materials are safe, regulated, and widely used. If you have allergies or concerns, we’re here to help find the right option for you.
Fillings Aren’t Scary.
Getting a filling is quick and painless. At Hadfield Family Dental, we use gentle techniques to keep you comfortable every step of the way.

Let’s Catch It Early

Think you might have a cavity? The sooner we treat it, the smaller the filling (and the cost!). Regular dental check-ups mean we can often spot and treat issues before you even feel a thing.
Book your check-up today — and take the guesswork out of what’s happening in your mouth
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