Healthy teeth are originally light yellow
In fact, people's healthy teeth are slightly yellowish. This is because the outermost layer of the tooth is called enamel. It is a translucent structure. The inner side is called dentin, which is pale yellow. It shows a slightly yellowish color through the enamel, which is also a healthy color.
The healthier the enamel calcification is, the higher the hardness is. The enamel is more transparent, and the yellow of the deep dentin is more easily transmitted and pale yellow.
Why is the baby's deciduous teeth white? Dr. Qiu Xiaoling explained that this is because the calcification of the deciduous teeth is lower than that of the permanent teeth, and the transparency is not high, so it will be whiter, but the hardness will be worse than that of the permanent teeth.
The older the teeth, the more yellow the teeth
Dr. Qiu Xiaoling answered, first, because with the increase of age, enamel is worn in the process, the repairing dentin is formed, and the repairing dentin color is more yellow than the original dentin, which causes the teeth to look more than before. Yellow, but this does not affect the function of the teeth.
Another possibility for yellowing of the teeth is exogenous coloration. Exogenous coloration is closely related to oral hygiene and eating habits. Foods such as tea, coffee, etc., or pigments in tobacco are easily deposited on the surface of the teeth, making the teeth darker. In addition, long-term use of certain drugs, such as chlorhexidine mouthwash or drug toothpaste, will form a brown coloration on the tooth surface. These exogenous stains can be removed by washing the teeth.
Why is the star's teeth white?
The kind of red-toothed white effect that you see in advertising is mostly generated by computer retouching software later, and it is not really brushed out with toothpaste.
There are also some stars whose teeth look very white, and may have been treated with whitening teeth. Dr. Qiu Xiaoling said that if you want to make your teeth white and snowy, there are medical methods, such as tooth bleaching, tooth veneers, and full crown porcelain teeth. These methods have different degrees of damage to the teeth, so if you are not because of professional needs, or the requirements for the whiteness of the teeth are very high, it is not recommended to receive whitening treatment.
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