Generally, people think the white teeth are healthy teeth and the white teeth always as the symbol of beauty. So many people go to the dental clinic to bleach their teeth deliberately. Even more many people go to the hospital to ask the doctor to coat a layer of “albuginea.” on their teeth surface.
In fact, the right color of healthy teeth is not the white as most people think, the healthy teeth should be the light yellow. why? Because the tooth surface is covered with a layer of enamel, the enamel is transparent or translucent state and the higher degree of the enamel calcification the enamel more transparent. However the deep nature of the dentin is pale yellow, so when the enamel is more transparent the deep nature of the dentin will show on the teeth with light yellow color. Otherwise the teeth will appear as abnormal white or milky white.
Therefore, the light yellow teeth is the real color of healthy, because it indicates a high degree of calcification of teeth enamel.