We often use "bright eyes and white teeth" to describe beauty, bright eyes are indispensable, but if the mouth is full of yellow teeth certainly can not be included in the list of beauty. In this era of face value, teeth are no longer limited to the function of chewing and speech, but also play a considerable role in the appearance of the face. Therefore, it is very necessary to do a cosmetic treatment to the teeth, a mouthful of white teeth, can handle 999 kinds of color lipstick, think about it is not very excited!
But first, we need to understand why the teeth will be yellow
First of all, to tell you a brutal fact: healthy teeth is originally yellow. Because teeth are divided into three layers: enamel, dentin and pulp.
The outermost layer of enamel is milky white and translucent, while the middle layer of dentin is light yellow. The healthier the enamel, the more transparent it is, and the easier it is for the yellow color of the dentin to shine through.
Secondly, there are many reasons for the yellowing of the teeth
1. Pigmentation is associated with smoking, drinking tea, and all kinds of pigmented foods.
2. Dental fluorosis
Dental fluorosis is caused by the high fluoride content in the local water during the development and calcification of the teeth, and the hard tissues of the teeth, especially the dentin, are stained.
3. Tetracycline teeth
Tetracycline is a drug that treats bacterial infections, and it has a staining effect on children's teeth. Once upon a time, the medical profession did not pay attention to this staining effect of tetracycline on the teeth, and now this kind of drug has not been used for children and pregnant women, but some parents lack of common sense in this regard, in the children's sick, blind application of tetracycline drugs, so at present in the children can still be seen in the tetracycline teeth.
Tetracycline teeth are yellow, in the sunlight is bright yellow fluorescence, and then gradually from yellow to brown or dark gray. This transformation is slow and can be facilitated by sunlight, with the labial surfaces of incisors being the first to change color.
The anterior teeth are more obviously colored than the posterior teeth; the coloration of the milk teeth is more obvious than the permanent teeth, because the enamel of the milk teeth is thinner and more transparent, and it is not easy to cover the color of the tetracycline conjugates in the dentin.
4. There are a variety of bacteria on the surface of the teeth
The reason why a person's teeth will become so yellow, most of the reasons may be due to the lack of attention to personal oral hygiene, do not often brush your teeth, then it is possible to make the teeth above the attachment of a very large number of bacteria, and the bacterial aggregation of the formation of plaque, which causes the teeth to become yellow. The first thing you need to do is to get a good deal on the price of the product.
The whitening of the teeth depends on the cause of the problem and on the method of whitening.
1. Scaling
If the yellowing of the teeth is due to external causes, i.e., pigmentation, it is mainly through cleaning and scaling. Scaling can remove the pigment attached to the surface of the hard tissues of the teeth. When our teeth will be restored to a more polished and bright white appearance, so scaling should be carried out once every six months to a year, and after scaling the teeth should also carry out some local treatment, including polishing, sandblasting, etc., so as to avoid the pigmentation, and quickly re-attachment.
2. Cold light whitening
Cold light whitening is a common method of teeth whitening in dentistry over the years. The principle of cold light whitening is mainly the use of hydrogen peroxide released free radicals, decomposition of teeth deposited for a long time on the colored substances. Early teeth whitening oxidizers will more or less wear down the existing tooth tissues, which may cause tooth oxidation, enamel tissue destruction, presenting a soft and concave phenomenon of the teeth, allowing you to eat ice and heat are easily uncomfortable. But now, due to the continuous updating and advancement of technology, the corrosion and destruction of hard tissues of the teeth is no longer the mechanism on which teeth whitening is based, so you can safely use this technology.
Does cold whitening come back?
It is generally accepted that cold whitening has a tendency to recur, and the whitening effect generally lasts for 2 to 3 years. Once it is found that the color and luster of the teeth have been reduced, cold whitening needs to be performed again.
3. Veneers
Porcelain veneers, for more serious fluorosis, or enamel, dentin underdevelopment. Through the teeth whitening, it may be difficult to play a good effect, so you can use porcelain veneers, or porcelain crowns, to restore the beautiful appearance of the teeth. But this method has its drawbacks, that is, to grind away part of the hard tissue of the teeth, there is a certain damage to the body of the teeth.
In life, in fact, there is no way to prevent and control the yellowing of teeth, but for the yellowing of teeth caused by pigmentation, quit smoking is necessary. In addition, eating habits should be slightly adjusted, as well as oral hygiene, to ensure that after three meals to rinse the mouth, morning and evening to brush teeth.