Learning about the different types of dental fillings can help you feel more prepared and comfortable when discussing your treatment options.
Why Dental Fillings Are Needed
When tooth decay develops, bacteria gradually damage the outer layer of the tooth. When not treated promptly, a cavity can increase in size and further compromise the strength of the tooth. A filling is required to remove the decayed area and restore strength and function.
Dental fillings seal the cavity, helping to prevent further damage and protect surrounding teeth. In some cases, fillings are also used to repair minor damage in broken teeth.
Your dentist will assess how much of the tooth is affected and recommend the most suitable filling material.
What Happens During a Dental Filling Procedure?
The dental filling procedure is usually straightforward. First, the dentist applies a local anaesthetic to numb the area. The damaged area of the tooth is carefully removed, and the cavity is thoroughly cleaned.
The selected filling material is then inserted into the cavity and shaped to fit your natural bite. The filling is hardened and polished, allowing the tooth to function normally again.
The specific steps may differ depending on which type of dental filling is being used.
Common Types of Dental Fillings
There are several types of dental fillings, and each has different materials, benefits, and considerations. Fillings are available in several materials, and the most suitable option may differ based on the tooth’s location, the extent of decay, and your personal preferences.
Composite Fillings
Composite fillings are currently one of the most widely selected options. They are created from composite resin, which is a tooth coloured material designed to match the shade of your natural teeth.
Because composite fillings are tooth coloured, they are often used for front teeth where appearance matters. They can also be used on back teeth in many cases.
Benefits of composite resin include:
- Natural appearance
- Direct bonding to tooth structure
- Preserves more of the natural tooth
During the procedure, composite fillings are applied in layers and set using a curing light.
Amalgam Fillings
Amalgam fillings have been utilised in dentistry for decades. They are produced from dental amalgam, which is a blend of metals commonly containing silver, tin, copper, and mercury.
A dental amalgam filling is strong and durable, making it suitable for back teeth where chewing pressure is high. These fillings are silver in colour and may be more visible in the mouth.
Amalgam remains a commonly used option in certain situations, although many patients prefer tooth coloured materials for aesthetic reasons.
Porcelain Fillings
Porcelain fillings, sometimes referred to as ceramic fillings, are laboratory-made restorations. They are custom-designed to match the tooth coloured shade of your natural teeth.
Porcelain is strong and resistant to staining. It is often used when a larger portion of the tooth is damaged, and extra strength is required.
Because porcelain fillings are made outside the mouth, the process may require more than one dental appointment. The cost can be higher compared to other materials, but many patients value the appearance and durability.
Gold Fillings
Gold fillings are crafted from a gold alloy and have a long history of use in dental care. Gold is very strong and can last many years with proper care.
However, gold fillings are noticeable due to their colour and may be more expensive. For this reason, they are less commonly chosen today compared to composite fillings or porcelain options.
Glass Ionomer Fillings
Glass ionomer fillings are made from a glass-based dental material that includes fine glass particles. This material releases fluoride, which may help protect against further decay.
Glass ionomer fillings are often used in baby teeth or in areas that are not exposed to heavy chewing pressure. They may not be as strong as amalgam or composite fillings, but can be useful in specific situations.
Temporary Fillings
Temporary fillings are used when a short-term solution is needed. For example, after emergency treatment or while waiting for a permanent restoration.
They are not designed to last long-term and will need replacement with a more durable filling material.
Choosing the Right Filling Material
The appropriate filling for your tooth depends on several factors:
- Location of the cavity (front teeth or back teeth)
- Size of the damaged tooth
- Biting forces in the area
- Personal preference
- Cost considerations
Your dentist will outline the advantages and limitations of each filling type. Treatment options vary depending on your oral health and the extent of decay.
Caring for Your Tooth Fillings
Proper care helps extend the life of your tooth fillings. This includes:
- Brushing twice daily with fluoride toothpaste
- Flossing regularly
- Attending routine dental check-ups
- Avoiding excessive pressure on treated teeth
Fillings can last many years, but they are not permanent. Over time, they may wear down or need replacement. Good oral health habits reduce the risk of further damage.
Final Thoughts
Understanding the types of dental fillings available allows you to make informed decisions about your dental care. Whether you choose composite resin, dental amalgam, porcelain, gold, or glass ionomer fillings, the goal is the same: to restore the damaged tooth and prevent further damage.
A dentist can guide you through the filling procedure and explain which material may suit your needs and oral health. If you have been told you need a filling or would like clarity about your treatment options, book a consultation with us at Ascentia Dental Studio or call (03) 5910 3107. We will assess your tooth carefully and talk you through the options, so you feel informed and comfortable about your care.
Resources
“Mayo Clinic Staff. (2023). ‘Cavities and Tooth Decay’. Mayo Clinic, 30 November. Rochester, MN: Mayo Foundation for Medical Education and Research. https://www.mayoclinic.org/diseases-conditions/cavities/symptoms-causes/syc-20352892”
“Cherney, K., McLean, A., & Archibald, J. (2025). ‘10 Ways to Keep Your Teeth Healthy’. Healthline, 13 May. San Francisco, CA: Healthline Media. https://www.healthline.com/health/dental-and-oral-health/best-practices-for-healthy-teeth”