The shade and color of our teeth are determined by the dentin. This is the layer that lies beneath the enamel.
The color of dentin varies from person to person. This is why there are different shades of teeth among individuals, ranging from more to less white.
Dentin is composed of thousands of small tubules, similar to pores, which communicate directly with the nerve located at the center of the tooth.
Teeth whitening is achieved using a chemical product, hydrogen peroxide. The latter passes through the enamel and dentin, acting to open the dentinal tubules and thus whiten the tooth.
Sensitivities?
It is true that teeth whitening often causes sensitivity.
This is why we recommend having a check-up beforehand, which will allow us to give you advice on how to limit this discomfort.