Online sources for 'major brand name' teeth whitening kits that include 'do it yourself' bleaching trays. - Factors to consider if selecting this type of product.

Teeth whitening kits that offer 'major brand name' whiteners and 'do it yourself' bleaching trays.

The use of custom bleaching trays is a part of the standard protocol for tray-based teeth whitening technique. This type of tray can be instrumental in helping to prevent gum tissue irritation side effects. This does not, however, mean that 'do it yourself' (self-molded) bleaching trays cannot be used successfully. Continued...

Online sources we've identified for 'major brand name' carbamide peroxide teeth whitening kits with 'do it yourself' trays.
1% - 9% carbamide peroxide	10% - 14% carbamide peroxide	15% - 19% carbamide peroxide	20% - 29% carbamide peroxide	30% - 35% carbamide peroxide
Nite White Nite White	Opalescence	Opalescence Opalescence	Opalescence	Opalescence Opalescence

The disadvantage of using 'do it yourself' bleaching trays stems from the fact that the edges of self-molded trays will rest on gum tissue. This can lead to gum irritation in two ways. One is by mechanical trauma. When the tray is worn its edges can rub on the user's gum tissue and cause irritation. The other way is by chemical trauma. A self-molded tray will hold the bleaching gel in contact with the gums, which can lead to gum tissue irritation.

If for whatever reason you do choose a DIY kit, we would still recommend that it include a major brand name whitening gel. Additionally, since the user's gum tissue will be in greater contact with the whitener than when custom bleaching trays are used, employing a less concentrated whitening gel should help to decrease the likelihood of developing gum irritation.