Teeth can darken or become stained over time. Brushing removes surface debris but does not change the underlying colour of the tooth, which is why some people ask their dentist about whitening.
Searching for teeth whitening in Sydney online returns a large number of results. The information below is intended to help you understand the options and their limitations before you make enquiries.
The Main Options
Whitening is available as over-the-counter products, as take-home kits dispensed by a dentist, and as in-chair treatment. Home whitening products have become popular largely because they are inexpensive and easy to obtain.
Professional teeth whitening differs in that a dental practitioner examines your teeth first and supervises the process. In Australia, products containing higher concentrations of hydrogen peroxide are restricted to use by registered dental practitioners, which is why in-chair results can differ from those of retail products.
Whichever option you consider, an examination beforehand matters. Whitening does not lighten crowns, veneers, fillings or other restorations, so an existing restoration may end up a noticeably different shade from the surrounding teeth. Whitening is also not appropriate where there is untreated decay, gum disease, cracked teeth or exposed root surfaces.
What whitening can and cannot do
Results vary considerably between individuals. The degree of change depends on the cause of the discolouration, the starting shade, the enamel itself and how well any at-home component is followed.
Some discolouration responds poorly to whitening. Staining caused by certain medications, trauma to a tooth, or changes within the tooth structure may not lighten in the way surface staining does. In those cases your dentist may discuss other approaches.
Whitening is not permanent. Teeth gradually pick up staining again from food, drink and smoking, and repeat treatment is usually needed to maintain a lighter shade.
Risks and Side Effects
The most common side effects are tooth sensitivity and irritation of the gums and soft tissues. These are usually temporary but can be significant for some people, particularly where there is existing sensitivity or gum recession.
Unsupervised use of retail products carries additional risks, including poorly fitting trays that allow gel to contact the gums, and use of products of unknown composition purchased online. Whitening is generally not recommended during pregnancy or breastfeeding, or for children and adolescents, and should be discussed with a practitioner if you have any of these considerations.
Before you Book
When looking at any dental practice online, it is reasonable to check that the practitioners are registered. You can search the public register at Ahpra. It is also worth asking what the fee covers, how many appointments are involved and what the expected result is for your particular teeth.
If you would like to know whether teeth whitening is suitable for you, arrange an examination with a registered dental practitioner.