Teeth whitening is one of the most popular cosmetic dental treatments — and for good reason. It's fast, non-invasive, and the results can make a surprisingly big difference to how you feel about your smile.
But with so many products on the market, it can be hard to know what's worth your time and what isn't. Here's what you actually need to know.
Why Do Teeth Discolour?
Tooth discolouration happens for two reasons: extrinsic staining and intrinsic darkening.
Extrinsic staining sits on the surface of the enamel and comes from things like coffee, tea, red wine, and smoking. This type responds well to whitening.
Intrinsic darkening happens inside the tooth itself, often due to ageing, certain medications, or trauma. This is harder to treat and may require other cosmetic options like veneers or bonding.
Most people have a mix of both, which is why a quick consultation before whitening is always a good idea.
Professional Whitening vs. Over-the-Counter Products
Supermarket whitening toothpastes and strips do work to some degree — but they're limited by law in Australia to very low concentrations of whitening agent. The results tend to be subtle and short-lived.
Professional whitening uses stronger, clinically tested solutions that actually penetrate the enamel to break up deep-set stains. The difference in outcome is significant.
At Fairfield Dental Care, we provide custom take-home whitening kits. We take impressions of your teeth and make trays that fit precisely, then supply you with a professional-grade whitening gel to use at home over one to two weeks. Because the trays are custom-fitted, the gel stays where it's supposed to and you get even, consistent results.
What Results Can You Expect?
Most patients see their teeth lighten by several shades. The exact result depends on your starting shade, the type of staining, and how consistently you use the kit.
Teeth whitening works best on natural teeth — it won't change the colour of crowns, veneers, or composite bonding. If you have any of these, it's worth discussing with us before you start so we can plan accordingly.
How Long Does It Last?
Results typically last one to three years, depending on your diet and habits. Coffee, tea, red wine, and smoking will all shorten how long your results last. Occasional top-up treatments can keep your smile looking its best.
Is It Safe?
Yes — when done correctly. Some people experience temporary tooth sensitivity or mild gum irritation during treatment, but this usually settles within a day or two of finishing. Using a sensitivity toothpaste in the lead-up to whitening can help.
We don't recommend whitening if you have untreated decay or gum disease, which is another reason to have a check-up first.
Ready to Get Started?
If you've been thinking about whitening your teeth, the easiest first step is to come in for a chat. We'll take a look at your teeth, let you know if whitening is right for you, and get you set up with a kit that'll actually make a difference.
