10 million Americans will pay to get whiter teeth this year, but will they get what they want?

Professional systems see you being fitted out with a custom-fitting tray which is essential to assure proper bleaching and consistent results. Using a custom tray will almost definitely result in less leakage into you mouth and gums. Custom fitting trays can be acquired directly from your dentist or from various online specialists who have a DIY custom tray kit. With this type of system you actually get shipped all the necessary items to make an impression of your teeth so your own custom-fitting stray can be made. You basically make your impression with the items provided, place it in the preaddressed packing envelope and mail it off. They will make your customized bleaching trays in a certified laboratory and send them back to you within 2-7 business days… than all you need to do is apply the gel into the tray and put it in your mouth for the recommended periods. The most important part of a teeth whitening system is the gel that is used. You can have an expensive custom-fitted tray (mouthpiece), but if you don't have the right teeth whitening gel, you will spend far too much time with the tray in your mouth and or your results will not be as expected. To understand the differences between whitening gels and why they are considered as the best tooth whitener, it is preferable to understand exactly what they are made of, and what they actually do.

Most gels contain either carbamide peroxide or hydrogen peroxide, and some contain fillers and flavors. Carbamide peroxide actually breaks down into hydrogen peroxide in the mouth. Hydrogen peroxide is the active whitener (it's the same chemical that will bleach your hair). The difference between most gels is the strength of the peroxide. Most gels these days are around 15% and up, with some of the most popular being around 22%. The strength of the peroxide obviously will play a determining factor in how long you need to leave the tray in your mouth, and tooth sensitivity can be a major part of deciding on what strength to use. But, in saying that, it is not actually the strength of the peroxide that usually causes sensitivity, but rather the length of time that the teeth are exposed to the chemical. That is why some people prefer to go for a higher strength (such as 22%) but use it for a shorter period of time. You can also get higher strengths like 35%, but these are only recommended for short ‘bursts’ of maintenance, perhaps monthly for periods of 15-30mins.

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