This simple home procedure uses hydrogen peroxide to bleach or whiten the teeth. Your dentist or hygienist takes a mould of your teeth so a technician can prepare a gum shield or tray of exactly the right size and fit. Once the tray is ready, your dentist will provide you with the whitening gel and important advice on how to use it. Your teeth may achieve the desired colour within a couple of days, but it may take up to 2 weeks.
Off-the-shelf home whitening kits are not advisable as the trays are not custom made to exactly fit. This can allow the bleaching gel to come into contact with your gums and may cause irritation. There have also been reports that the bleaching gels in such kits may not achieve the desired result.
It is not suitable for everyone. Your dentist is best placed to advise whether the treatment is right for you and the results you can expect.