Whats the difference between Hydrogen Peroxide and Carbamide Peroxide?
The two most common peroxides used in teeth whiteners on the market today are hydrogen peroxide and carbamide peroxide. While they are very closely related, they are different enough that it is worth spending time to discuss the similarities and the differences. Hydrogen peroxide is just that, the chemical with the formula of H2O2. It is usually created as a water solution (H2O2 dissolved in water). During use, it breaks down into one or more radicals that are the actual chemical “bits” that chemically whiten the teeth. It is usually the “hydroxyl radical” that does the work, but there can be others. Carbamide peroxide is hydrogen peroxide dissolved in urea crystals. For “palatability” issues, the name carbamide peroxide is used instead of the more proper name, urea peroxide. Chemically, carbamide breaks down into hydrogen peroxide. Since it breaks down into a lower concentration, you have to start out at a higher concentration to get a similar effect. A solution of 10% carbamide perox
