When it comes to treating cavities, most people are surprised to learn they have more than one option. Tooth-coloured fillings and metal fillings are both commonly used in dentistry—but they differ significantly in appearance, material, durability, and long-term impact on your teeth.
In this blog, we'll walk you through how each type of filling works, how dentists decide which one to use, and what factors matter most when choosing the right option for your smile. We'll also cover safety, cost, longevity, and real-world considerations—so you can feel confident and informed before your next dental visit at Murwillumbah Dental.
What Are Tooth-Coloured Fillings?
Materials Used in Tooth-Coloured Fillings
Tooth-coloured fillings are typically made from a composite resin that blends seamlessly with your natural tooth colour. This material bonds directly to the tooth structure, allowing dentists to preserve more of the healthy tooth compared to traditional options. Modern composite dental fillings are strong, durable, and designed to withstand everyday biting and chewing.
When Dentists Recommend Tooth-Coloured Fillings
Dentists often recommend tooth-coloured fillings for small to medium cavities, especially in visible areas like front teeth or premolars. They're also a popular choice for patients who want a more natural-looking restoration without compromising function. At Murwillumbah Dental, these fillings are commonly used as part of minimally invasive, conservative dental care.
What Are Metal Fillings?
Understanding Amalgam (Metal) Fillings
Metal fillings—also known as amalgam fillings—have been used in dentistry for decades. They're made from a combination of metals, including silver, tin, copper, and mercury, forming a strong and long-lasting material. Amalgam fillings are well known for their durability, especially in back teeth that experience heavy bite pressure.
Situations Where Metal Fillings Are Still Used
Metal fillings may still be considered for large cavities in molars where aesthetics are less important, or in cases where moisture control is difficult. While effective, they require removing more natural tooth structure compared to tooth-coloured options.
Tooth-Coloured Fillings vs Metal Fillings: Key Differences
Appearance & Aesthetics
The most noticeable difference is appearance. Tooth-coloured fillings are designed to match your natural teeth, making them virtually invisible. Metal fillings, on the other hand, are clearly visible and may darken over time.
Durability & Longevity
Metal fillings are known for their strength and can last many years, especially in high-pressure areas. However, modern tooth-coloured fillings have significantly improved and now offer excellent durability for most everyday dental needs.
Safety & Tooth Preservation
Tooth-coloured fillings bond directly to the tooth, helping strengthen it and reduce the risk of cracks. Metal fillings expand and contract with temperature changes, which can sometimes weaken surrounding tooth structure over time. Both options are considered safe, but many patients prefer composite materials for their conservative and natural approach.
Cost Comparison: Tooth-Coloured Fillings vs Metal Fillings
Short-Term Cost vs Long-Term Value
Metal fillings are generally less expensive upfront. However, tooth-coloured fillings often provide better long-term value by preserving more of the natural tooth and reducing the need for future restorative work. The right choice depends on your oral health, the tooth involved, and your long-term dental goals.
Which Filling Is Right for You?
Factors Dentists Consider Before Recommending a Filling
Choosing between tooth-coloured and metal fillings isn't a one-size-fits-all decision. Dentists consider:
- Location of the tooth
- Size and depth of the cavity
- Bite pressure and chewing habits
- Aesthetic preferences
- Overall oral health
At Murwillumbah Dental, treatment recommendations are based on clinical experience, evidence-based dentistry, and what's best for your long-term oral health—not trends or shortcuts.
🔗 Related Reading
- Learn more about our Tooth-Coloured Fillings service
- Read: What Are Tooth-Coloured Restorations and Why Are They So Popular?
- Explore preventive care options alongside Wisdom Teeth Treatment
People Also Ask
Are tooth-coloured fillings better than metal fillings?
They're often preferred for aesthetics and tooth preservation, but the best option depends on the tooth and cavity size.
How long do tooth-coloured fillings last?
With proper care, they can last many years and perform well under normal chewing forces.
Are metal fillings safe?
Yes, they're considered safe and effective, though many patients now choose alternatives for cosmetic reasons.
Can metal fillings be replaced with tooth-coloured fillings?
In many cases, yes—your dentist can advise if replacement is suitable for your tooth.
Book a Consultation
Still unsure which filling is right for you? A personalised dental assessment is the best way to decide. Book a consultation at Murwillumbah Dental to discuss your options and receive care tailored to your smile, comfort, and long-term oral health.