Teeth whitening trays became popular after 1900. At first they were used to whiten stained teeth, however nowadays a normal shade of teeth might be considered yellowish. Be aware that a super bright white smile is in fashion. Using trays for teeth whitening is a simple, efficient procedure for a reasonable price. The change is not striking, as in the case of laser whitening. It is rather a gradual, slower process, but the results are great. You will have to wear these trays for around two weeks, usually at night or as indicated by the dentist. Many scientific studies showed that gradual teeth whitening is the best for your teeth. There is a less chance that your teeth and gums will be harmed.
One of the advantages of using teeth whitening trays is that you can use them at home. Trays can be purchased over counter or the dentist can have one custom made. Actually, custom made trays are the best, for more reasons. Firstly, because the dentist takes an impression of your teeth the tray will fit perfectly. This way the chance that the gel will reach your gums and cause irritations are minimized. Also, the gel will stay in contact with your teeth in order to bleach them properly. Boil and Bite trays work in a similar way. You take the plastic-like substance, put it in hot water, bite it to take the impression of your teeth and there’s your tray. These trays, together with the ones already made probably won’t fit so perfectly. So there is a higher chance that they will feel uncomfortable and the gel won’t reach every tooth properly. Still, most of the costumers are satisfied with the results, also considering that they are pretty cheap.
Let’s say that you have the tray, now the only thing you need is a whitening gel. Teeth Whitening gels used for trays have a lower concentration. This is why the bleaching takes more time. However, this way it’s safer, a strong gel might cause gum irritations and harm your teeth. Carbamide peroxide is another substance that is used for teeth whitening. It is weaker than hydrogen peroxide, you will have to use it for a longer time. Remember to visit your dentist before you use a whitening tray. Don’t overuse any of the whitening products! It is also a good idea to visit the dentist during the time you use the tray to check if everything’s fine.
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