For most people, hearing the words “you have a cavity” is a common, if not particularly welcome, part of life. But what comes next? The dental filling is one of the most fundamental and effective treatments in all dentistry. It’s a routine procedure that stops decay in its tracks, restores the function of your tooth, and, most importantly, prevents much larger and more complex problems down the line.
At Newbrite Dental, we are built on a foundation of providing gentle care for everyday people. We understand that dental procedures can be a source of anxiety, which is why we believe in empowering you with clear, honest information. This guide will walk you through everything you need to know about Dental Fillings Guide, from how you get a cavity to the different materials available and what you can expect during your appointment.
How Do I Know If I Need a Dental Filling?
A cavity is a small hole that forms in your tooth, caused by plaque acids that eat away at the hard outer enamel. Sometimes, you’ll know something is wrong, but often, small cavities are “silent.” This is why regular check-ups are so crucial.
Common signs that you might need a dental filling include:
- Tooth Sensitivity: A sudden sharp pain when you eat or drink something hot, cold, or sweet.
- Persistent Toothache: A dull, throbbing, or sharp pain that doesn’t go away.
- A Visible Hole or Pit: You may be able to see or feel a small hole in your tooth with your tongue.
- Pain When Biting Down: Discomfort or pain when you apply pressure to a specific tooth.
- Staining: A dark brown or black spot on the surface of your tooth.
If you experience any of these symptoms, it’s essential to see your dentist for an examination.
The Dental Filling Process: A Gentle, Step-by-Step Guide
The idea of getting a filling is often far more daunting than the procedure itself. Here’s what you can expect at your appointment:
- Numbing the Area: Your comfort is our top priority. First, we’ll apply a numbing gel to your gum, followed by a local anaesthetic to completely numb the tooth and surrounding area. You won’t feel any pain during the procedure, just some light pressure.
- Removing the Decay: Your dentist will use a small, high-precision dental drill to gently and carefully remove the decayed portion of the tooth. We only remove the damaged structure, preserving as much of your healthy tooth as possible.
- Cleaning and Preparing: Once all the decay is gone, the area is thoroughly cleaned and disinfected to ensure no bacteria are trapped inside.
- Placing the Filling: The chosen filling material is then placed into the prepared cavity. For modern composite fillings, this is done in small layers.
- Curing the Material: Each layer of composite resin is hardened, or “cured,” in seconds using a special blue light. This bonds the material securely to your tooth.
- Polishing and Bite Check: After the filling is placed, your dentist will shape and polish it to match the natural contours of your tooth. We will check your bite to ensure the filling feels comfortable and doesn’t interfere with how your teeth come together.
Types of Dental Fillings Available in Australia
When it comes to fillings, you have options. The best choice for you depends on the location of the cavity, the extent of the decay, your budget, and your aesthetic goals.
Composite Resin (Tooth-Coloured Fillings)
This is the most popular choice in modern dentistry, and for good reason.
- Aesthetics: Composite resin can be perfectly matched to the exact shade of your natural tooth, making the filling virtually invisible. This is ideal for fillings in visible areas.
- Bonding: The resin chemically bonds to your tooth structure, which can add to the overall strength of the tooth.
- Versatility: It can be used to fix chipped or broken teeth, as well as fill cavities.
- Lifespan: Generally lasts 7 to 10 years with good care.
Amalgam (Silver Fillings)
Amalgam has been used for over 150 years and is known for its strength and durability.
- Durability: Extremely strong and long-lasting, often 10-15 years or more. It’s an excellent choice for large cavities in back molars that withstand heavy chewing forces.
- Aesthetics: The main drawback is its dark, silver colour, which is highly visible and can darken the tooth over time.
- Mercury Content: Amalgam contains a mixture of metals, including about 50% mercury. We’ll discuss this in more detail below.
Ceramic (Porcelain) Fillings
These are technically “inlays” or “onlays” and are custom-made in a dental lab.
- Aesthetics: Like composite, they are tooth-coloured and offer a very natural look. They are also highly resistant to staining.
- Durability: Very strong and durable, often lasting over 15 years.
- Cost: This is a premium option, often costing $500 or more per tooth.
The Amalgam Debate & Safe Amalgam Removal
For decades, the mercury in amalgam fillings has been a topic of discussion. While health authorities generally consider them safe once set, research shows that tiny amounts of mercury vapour can be released during chewing.
At Newbrite Dental, we respect our patients’ concerns about both the health and cosmetic aspects of these “black fillings.” Many people simply don’t want the dark appearance in their smile or the potential presence of mercury.
Because of this, we offer a Safe Amalgam Removal service. This isn’t just about drilling out an old filling; it’s a specific protocol designed to minimise your exposure to mercury particles and vapour during the removal process. This includes:
- Using a Rubber Dam: A non-latex sheet that isolates the tooth, preventing you from swallowing any particles.
- High-Volume Suction: A special suction tip placed right next to the tooth to capture particles and vapours as they are generated.
- Cool Water Spray: Using ample water spray to keep the filling cool, which significantly reduces the amount of vapour released.
- “Chunking” Technique: Removing the filling in large “chunks” rather than grinding it all away, further minimising particle generation.
Once the amalgam is safely removed, we can replace it with a new, tooth-coloured composite filling that is both aesthetic and functional.
Aftercare: How to Care for Your New Dental Filling
After your procedure, the numbness will wear off in a few hours. Here’s how to ensure a smooth recovery:
- Be Careful Chewing: Avoid chewing on the numb side of your mouth until the anaesthetic wears off completely. It’s easy to bite your cheek or tongue.
- Manage Sensitivity: It is very common to experience some sensitivity to hot, cold, or pressure for a few days or even weeks after a filling. This is normal and should fade over time.
- Good Oral Hygiene: You can and should brush and floss as normal. Be gentle around the new filling for the first day or two. Good hygiene is the best way to prevent new decay from forming around your filling.
- Avoid Hard/Sticky Foods: For the first 24 hours, it’s wise to avoid extremely hard, crunchy, or sticky foods on the side of the new filling.
Your Partner in Gentle, Long-Lasting Dental Care
A dental filling is a simple, effective way to protect your smile for the long term. By treating decay early, you prevent pain, infection, and the need for more complex treatments like root canals or extractions.
If you’re experiencing tooth sensitivity or are concerned about old amalgam fillings, we invite you to schedule a consultation. Our team at Newbrite Dental is here to provide gentle, comprehensive care, answer all your questions, and help you achieve a healthy, confident smile.
Do you need a dental appointment? Call us today or book online now. We’re here to provide gentle, professional care for you and your family.

