Carbamide vs Hydrogen Peroxide

Hydrogen Peroxide Teeth Whitening

When you get your teeth whitened, hydrogen peroxide is what actually whitens them. Even if you are using carbamide peroxide, what actually whitens your teeth is hydrogen peroxide. Something that many people don’t know is that carbamide peroxide is made from hyrdrogen peroxide. To create carbamide peroxide, a urea molecule is added to the hydrogen peroxide molecule and the result is carbamide peroxide. Please note that there is a 3:1 relationship between carbamide and hydrogen. For example, 12% hydrogen peroxide is theoretically equivalent to 36% carbamide peroxide. However, as you’ll see below, this doesn’t mean that you’ll get the same results with 36% carbamide and 12% hydrogen peroxide. So don’t think that because someone offers you 35% carbamide that you are getting a 3x higher concentration than 12% hydrogen peroxide.

Carbamide Peroxide Teeth Whitening

In order for carbamide peroxide to whiten your teeth, it must first break down into hydrogen peroxide. The problem in using carbamide in chair-side treatments that are 15 to 20 minutes is that it takes at least 15 minutes for carbamide peroxide to begin to break down into hydrogen peroxide (and longer to completely break down). Only when the carbamide peroxide has broken down into hydrogen peroxide can it begin to whiten your teeth. So if you use carbamide peroxide for teeth whitening during a 20-minute treatment, you will only have a little hydrogen peroxide on your teeth for 5 minutes. That’s why most people that use carbamide peroxide are not happy with the results.