The at home Tray Whitening kits are in fact contain custom built mouth trays, supplied with individually adjusted concentration of hydrogen peroxide filled in a syringe, for use by the patients observing the instruction and guidance given. The custom built mouth trays are applied with hydrogen peroxide provided in the syringe and to be kept in the mouth for advised period of exposure of the teeth only to hydrogen peroxide.

Historically the use of trays for whitening trays appeared on the scene in early 1900, and the technology was a secret affair. Initially it was used only for stained and discolored teeth by the dentists’ in-office. Now one finds various variations like retail on counter dispensed trays and toothpaste formulations. Presently the dental in-office trays are of a different variety, the active ingredients of the tray get activated with ultraviolet light and the results are quick and better in comparison to on counter dispensed kits.

L.E.D. Light Activated Teeth Whitening System:

Very often personal convenience overrules in a critical teeth whitening decision whether to be carried out dentist’s in-office procedure ignoring LED-light activation facilities and preferring choice of taking home custom built teeth whitening kits. This is to be repeated every day for around 2 weeks. Thus with the use of custom built trays, there is protection to the gums and other soft tissues. The dentist gets an occasion to review the progress of the bleached shade and advises period of using mouth trays. The results obtained are amazing, but the process at home takes little longer time

Using Teeth whitening tray for prolonged period and duration is very cumbersome and has now become out of fashion, because of the promotion of light activated system by manufacturers promising it as just lunch hour operation by keeping the trays in mouth during lunch time and exposing the teeth to ultraviolet light.

Various trials with the trays reveal; that teeth whitening are at its best, with the use of trays and regaining the smile back. In comparison, over the counter teeth whitening kits are significantly much cheaper as compared to in-office trays. Although it is possible to make choice of hydrogen peroxide strength by self or by dentist, with the role of dentist there is better control in the results and side effects in comparison to self used over the counter dispensed tray kit?

Professional Designed Tray Vs Over the Counter Tray:

The teeth whitening trays are advised by the dentist as well as these are available on the counter or online. The dentist takes care that the kit provided by him, have custom built perfectly fitting trays designed to reduce the time of wearing them and ensuring maximum contact of bleach to the teeth. They have a capability of reusing it many times for a particular spot bleaching also. The dentist provided tray has a high standard of quality and results.

The making of custom tray requires taking impressions of one’s teeth and based on the impression created make an individual mold exactly fitting the tooth arches both upper and lower. Now the trays are filled with specific concentration of hydrogen peroxide as directed by the dentist and wear the mouth tray for the duration advised by the dentist ranging half-an-hour to few hours lasting for a fortnight.

The Use of Boil & Bite Trays:

With the advancements in technology few over the counter kits have feature of custom built trays. Still the self teeth impression may not be as correct as taken by a dentist. The variety of trays can be of either boil and use or a standard variety, which fits every one with varying degree of contacts to the teeth.

The Boil & Bite Variety is made of malleable material, which on mild heating and placing it in the mouth and biting it takes the shape of individual teeth in the tray. And it acts just like custom built tray.

Stock or Single Size Tray:

The Stock or one size trays generally fit majority of the persons, but if it is not perfect fitting, there is excessive salvation, which dilutes hydrogen peroxide responsible for bleaching, in such cases there is discomfort as well as the result is poor.

Considering the affordability criteria, many persons go for over the counter trays and feel satisfied with the results they get.