When a cavity needs repairing, dentists use fillings to restore the damaged tooth and prevent further decay. Today, patients often have a choice between different filling materials, with the most common being composite (white) fillings and amalgam (silver) fillings.
At Hassocks Dental Surgery, dentists discuss the most suitable filling material for each patient as part of restorative dentistry, based on the location of the cavity, the size of the tooth damage, and the patient’s preferences.
Understanding the differences between composite and amalgam fillings can help patients make an informed decision about their treatment.
What Are Composite (White) Fillings?
Composite fillings are made from a durable resin material that is designed to match the natural colour of your teeth.
Because they blend in with the surrounding tooth structure, composite fillings are often chosen for visible areas of the mouth such as front teeth.
Advantages of Composite Fillings
Composite fillings offer several benefits:
- Natural appearance that matches the colour of teeth
- Strong bonding to the tooth structure
- Less removal of healthy tooth material during treatment
- Suitable for repairing small to medium cavities
Modern composite materials are also highly durable and can withstand normal chewing forces.
When Composite Fillings Are Commonly Used
Dentists often recommend composite fillings for:
- Front teeth
- Visible areas of the mouth
- Small to medium cavities
- Replacing older silver fillings
Many patients prefer this option because the restoration is discreet and blends naturally with the tooth.
What Are Amalgam (Silver) Fillings?
Amalgam fillings are made from a mixture of metals including silver, tin, copper, and mercury. They have been used in dentistry for over a century due to their strength and durability.
Although amalgam fillings are less commonly used today, they can still be effective for certain situations.
Advantages of Amalgam Fillings
Amalgam fillings are known for their durability and resistance to wear.
Benefits include:
- Very strong and durable
- Long lifespan (often 10–15 years or more)
- Suitable for back teeth where chewing pressure is higher
However, their silver colour makes them more noticeable compared with tooth-coloured alternatives.
Key Differences Between Composite and Amalgam Fillings
While both materials effectively repair cavities, there are several differences between them.
Appearance
Composite fillings match the natural tooth colour, while amalgam fillings are silver in appearance.
Durability
Amalgam fillings are traditionally considered very durable, particularly for larger cavities in back teeth.
Composite fillings are also strong, though they may wear slightly faster in areas exposed to heavy chewing pressure.
Tooth Preservation
Composite fillings bond directly to the tooth structure, which means dentists often remove less healthy tooth material during treatment.
Patient Preference
Many patients now prefer composite fillings due to their natural appearance.
Are Amalgam Fillings Still Used?
In the UK, the use of amalgam fillings has been gradually reduced due to environmental considerations and the availability of modern alternatives.
Composite fillings are now widely used for most cavity treatments, particularly in visible areas.
Your dentist will always recommend the most suitable option based on your dental needs.
Choosing the Right Filling
The best filling material depends on several factors, including:
- The location of the cavity
- The size of the tooth damage
- The amount of chewing pressure the tooth experiences
- Aesthetic preferences
Your dentist will explain the available options and help you choose the most appropriate treatment. If you would like personalised advice, you can contact Hassocks Dental Surgery to arrange an appointment.
