How We Treat Cavities
The right treatment depends on how far decay has progressed. Caught early, a simple filling is all that's needed. More advanced decay may require a crown, root canal or, in severe cases, extraction. This is why regular check-ups matter: early-stage treatment is always simpler, faster and more affordable.
Tooth-Coloured Fillings
The standard treatment for early to moderate cavities. Decay is removed and replaced with composite resin that matches your tooth colour.
Fluoride Remineralisation
For very early-stage decay (pre-cavities), concentrated fluoride can reverse the damage before a cavity fully forms.
Dental Crowns
When decay is extensive and a filling won't provide enough structural support, a crown covers and protects the remaining tooth.
Root Canal Treatment
If decay reaches the pulp and causes infection, root canal therapy removes the infection and saves the tooth.
Extractions
A last resort when a tooth is too damaged to save. We discuss replacement options including implants and bridges.
Fissure Sealants
After treating decay, sealants can be applied to prevent future cavities on vulnerable back teeth, especially for children.
Don't Wait, Cavities Only Get Worse
A small cavity treated today requires a simple filling. Left untreated, the same cavity can spread to the nerve, requiring a root canal or extraction that costs significantly more and takes multiple visits to fix. Pain is often the last symptom, not the first.
Signs You May Have a Cavity
Tooth Sensitivity
Pain or discomfort when eating sweet, hot or cold foods, especially if it's a new sensation.
Visible Holes or Dark Spots
Brown, black or grey discolouration, or an obvious pit in the tooth surface.
Toothache
Spontaneous pain or aching that lingers after eating, a sign decay may be close to the nerve.
Food Getting Stuck
Cavities create irregular surfaces that trap food more easily than healthy teeth.
Bad Taste or Smell
Persistent bad taste or breath despite good hygiene can indicate active decay or infection.
No Symptoms (Yet)
Many cavities cause no pain until they're advanced. X-rays at check-ups detect them early.
Frequently Asked Questions
How quickly can a cavity get worse?
It varies depending on your diet, saliva and oral hygiene, but a small cavity can progress to requiring a root canal within six to twelve months if untreated. Getting it checked promptly is always the right call.
Does getting a filling hurt?
No. We apply local anaesthetic before starting, and most patients are comfortable throughout the procedure. Mild sensitivity for a day or two afterward is normal.
Can I prevent future cavities after having one?
Absolutely. Improving your brushing technique, flossing daily, reducing sugar intake and keeping to your check-up schedule makes a significant difference.
How long does a filling last?
Composite (tooth-coloured) fillings typically last 7–10 years. With good home care and regular checks, many last longer.
Can children get cavities in baby teeth?
Yes, and they should be treated. Untreated decay in baby teeth can cause pain, infection and affect the development of permanent teeth. We treat children's cavities gently and with care.
Concerned About a Cavity?
Book today, the sooner we treat it, the simpler and more affordable the solution.
Book Online NowImportant Information
This page provides general information only and is not a substitute for professional dental advice. Treatment suitability, results and costs vary between patients.
A consultation with one of our dentists is required to assess whether this treatment is appropriate for you. Book a consultation or call 08 9256 2588.
References & Further Reading
This page is based on current clinical literature and guidelines from recognised Australian and international dental and health authorities.
- Australian Dental Association. ada.org.au
- Dental Board of Australia (AHPRA). dentalboard.gov.au
- Australian Society of Implant Dentistry (ASID). asid.com.au
- Therapeutic Goods Administration (TGA) - Medical Devices. tga.gov.au
- Australian Society of Endodontology. ase.org.au
- Australian and New Zealand Association of Oral and Maxillofacial Surgeons. anzaoms.org
Content reviewed by Dr Desmond Ng, BDSc (Hons) University of Queensland | Principal Dentist, Dentists at Canning Vale. Last reviewed July 2026.