| Online sources we've identified for 'major brand name' carbamide peroxide teeth whitening kits with custom 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 Nite White |
Nite White |
Opalescence Opalescence Opalescence Opalescence Nite White |
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The unofficial 'standard' for at-home tray-based teeth whitening technique is a 10% carbamide peroxide bleaching gel. This whitener was the first to be used with this technique and has been used by more people, over a longer cumulative time frame, than any other whitener. This whitener is the most studied bleaching agent. It has been shown to be safe and effective. The case can be made that this whitener probably produces a more even whitening effect, less post treatment color relapse, and less side effects than higher concentration whiteners.
It is true that higher concentration whiteners offer the advantage of quicker results but they place the user at a greater likelihood of experiencing side effects too. Both relatively higher and lower concentration bleaching gels can be expected to produce a similar whitening end result. It's simply that it will take a greater number of individual bleaching treatments when the lower concentration whitener is used.
A 10% carbamide peroxide whitener is an excellent choice for the first time user. If a person has a history of utilizing a 10% whitener without experiencing significant side effects, then they might elect to try a higher concentration one.