Carbamide peroxide is actually hydrogen peroxide plus urea. Carbamide peroxide products remain active longer for up to 10 hours and lessen acidity to a level where the enamel is not affected and the person cannot get tooth decay. Hydrogen peroxide may come in stronger concentrations, but only stays active for up to an hour and is more acidic, so should not remain on the teeth for extensive lengths of time.
There are carbamide peroxide materials for both at home and in the office treatment, as well as hydrogen peroxide materials for in the office and at home treatment.
The concentrations vary, and determine the treatment time and technique. Also, if a high concentration of material is being used, your dentist must take steps to protect your gums from coming into contact with it.
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