Whitening cannot give a complete colour change, but it can lighten the existing shade. Before you made a choice about this subject, it´s important to analyse some information in order to keep your mouth and gums healthy.
Get a professional cleaning and mouth examination, even if you decide to whiten your teeth at home using over-the-counter strips or gels. It could be that all you need is a thorough cleaning to restore your teeth’s sparkling good looks.
The examination can also detect any cavities. Getting the cavity treated first is crucial to keeping tooth whitening safe. It´s important not to abuse with the tooth whitening products. This products including tray kits, gels or strips, contain bleaching agents, some are peroxide-free. EU rules mean home tooth whitening products can only contain up to 0.1% hydrogen peroxide.
Leaving the strips or gels on longer than advised can irritate the gums. More is not better and could lead to problems. Teeth do darken with age, and the range of colour varies from person to person.
The dentist should be able to show you a chart to show the likely shade of your teeth before and after treatment.