For the majority of people, the benefits are cosmetic. Over time our teeth change, the ageing process, repeated exposure to coffee, tea, red wine and strongly coloured curry or pasta sauces all make their mark. Those who smoke will find their teeth darken even more quickly. Teeth whitening is a non-invasive, effective way to brighten your teeth and the results can be seen quickly.

Treatment involves the use of a whitening gel that releases a safe level of hydrogen peroxide into the teeth to bleach out deep as well as surface staining from natural teeth. Some people may experience sensitivity but this subsides once the course of treatment has been completed.

Teeth which seem at an acceptable shade, which is subjective for clinician and patient to decide.

Presence of composite restorations mixed with natural tooth structure, which will not lighten with treatment. They may need replacing post whitening. If the restorative needs of the patient are too high, whitening may not be a good idea.

Porcelain restorations such as crowns and veneers will not lighten, and may require replacement after whitening treatment. Patients need to be made aware of the process and costs for doing this prior to teeth whitening, to ensure they consent to this.

Pregnant or breastfeeding women.

Patients who are unable to be compliant.

Patients with unrealistic expectations.

Patients with exposed cementum and exposed root surfaces, as cementum does not lighten with teeth whitening agents.