Molecular hydrogen peroxide (H2O2) was found to move along to the pulp during and after whitening. Enamel is permeable, although it was thought that the enamel is an almost impermeable layer. More precisely, it is considered a semi-permeable layer. All teeth have micro-fine fine pores. These pores are naturally occurring, or these permeable channels may be formed by microcracks or scratches.
Hydrogen peroxide also contacts the pulp.
Our body continuously produces a certain amount of hydrogen peroxide but with its own natural catalysts, it quickly decomposes it into water and oxygen. There is a certain rate of hydrogen peroxide, which the body can break down smoothly and recently, this rate is being used to determine the security rate of hydrogen peroxide whitening gels.
Hydrogen peroxide that penetrates into the pulp decomposes in body fluids but since pulp is a closed area, it is thought that the water and oxygen gas released causes sensitivity to the pulp.
BioWhiten ProOffice sensitivity ratio is less than 5%.