The colour of the teeth, as well as that of the eyes or hair, varies from person to person. It is therefore not considered a stable parameter since it varies from one individual to another, from one dentition to another or even over time in the same tooth. What You Need to Know To begin with your teeth whitening , the color of the teeth is genetically conditioned. It is defined by the color of the dentine and the thickness and quality of the enamel: The enamel is translucent and practically has no color. Depending on its thickness and quality (degree of mineralization) it allows the color of the dentine to be more or less "transparent". The dentine is yellowish. Depending on its thickness and quality it is more or less yellowish. Variations in tooth colour Variations in tooth color that we can find are determined by: Age : older people have thinner enamel thicknesses due to tooth decay. For this reason, we usually see a more yellowish color in their t...