Teeth whitening has become a popular trend within the dental industry, this is because tooth discoloration can impact a person’s smile and confidence.

A tooth that is in good condition is somewhere between white and yellowish. Teeth get their colour from the dentin, which is much opaquer than the enamel. A tooth’s translucency or opacity depends on the composition of the enamel. Also, teeth whose enamel is thicker will be less translucent and brighter.

The enamel surface is also important in defining the colour of teeth, because if a tooth is smooth and shaped normally, it will be brighter, while if the surface has irregularities, it will be duller and darker, since the reflection of light loses its intensity when it hits the enamel surface.

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