Tray Whitening Kits are used at home and typically consist of mouth trays & individual doses of peroxide in syringe form. You inject the peroxide into the mouth trays and wear them over your teeth for a certain amount of time each day (or sometimes overnight), usually for up to two weeks. The results are striking, yet gradual, permitting you or your dentist to monitor progress, specify shade whiteness and minimize sensitivity.
Developed in the early 1900's, tray whitening kits were once the only options for those with stained or discolored teeth. Yet, as teeth whitening moved into retail stores with toothpaste formulations, and conventional dentists purchased expensive in-office light-activated systems, the tray procedure was largely overshadowed.
Wearing teeth whitening trays for extended periods of time and the discomfort it could cause, were two of the primary reasons tray whitening fell out of favor with consumers, especially compared to the concept of super-fast "lunch-hour" whitening promoted by light-activated system manufacturers.
Recent studies, however, are showing, that tray teeth whitening may still be the best and most effective way to dramatically improve your smile. Tray whitening kits are generally less expensive than in-office procedures, and because either you or your dentist may choose the strength of the hydrogen peroxide solution used, there's more control over results and less chance of side-effects.
From : http://www.teethwhiteningreviews.com/artman/publish/all-about-teeth-whitening-trays.php
Posts
