Bleaching chemistry
Reading time: 2 minutes
The history of bleaching dates back over 100 years – oxalic acid was used in 1877; hydrogen peroxide was first used in 1884. In different concentrations and combinations, it remains in use even today. Concentrations vary between 3–35%. The hydrogen peroxide molecule is small, allowing it to permeate enamel and dentin easily. The effect of hydrogen peroxide ...