Many people have beautiful teeth because of their teeth whitening. So, what exactly can teeth whitening achieve generally?

At present, the commonly used teeth whitening treatment at home and abroad is mainly tooth bleaching technology. The principle is that the organic dyed macromolecules (dark) on the tooth surface are decomposed into small molecules (light) by means of redox, and the teeth are whitened from dark to light. The current mainstream bleaching methods are divided into "cold photocatalytic whitening" and "non-photocatalytic whitening". The whitening agents used in the two whitening methods are different, but the whitening principle is the same: the hydrogen peroxide is decomposed into water molecules and active oxygen groups. It's just that the former requires cold light source irradiation to accelerate redox, while the latter does not.

Whitening does not hurt your teeth, don't panic if you have sensitivity

Using regular procedures to whiten your teeth will not harm your teeth. If you have calculus or smoke stains, you can wash and polish your teeth first, so that the whitening effect will be better.

Some people have tooth sensitivity just after teeth whitening, and they think that whitening hurts their teeth. In fact, according to the normal operation process, there will be a sensitive period of 1 to 2 days after whitening, and the degree of sensitivity varies from person to person. At this time, you can use desensitizing toothpaste to avoid hot and cold stimulation, and the teeth will return to normal after the sensitive period.

Teeth whitening is not for everyone

Before teeth whitening, your doctor will perform a comprehensive oral examination to assess whether your teeth are suitable for whitening treatment.

Teeth whitening is suitable for the following people:

● Exogenous coloration

Pigmented foods in the daily diet, such as cola, tea, soy sauce, etc., cause tooth coloration.

● endogenous coloration

Mild to moderate tetracycline teeth, fluorosis teeth, or discolored teeth caused by other factors, hereditary yellow and black teeth, etc.

● age-related discoloration

As you age, your teeth wear out, so yellowing can also occur (this is normal).

The following people are not suitable for teeth whitening:

● Pregnant women and people with certain diseases such as asthma and heart disease;

● People who have installed porcelain veneers or dentures, as whitening agents are not suitable for artificial materials;

● In patients with severe periodontal disease, the exposed root part of the tooth cannot be whitened, which will cause chromatic aberration;

● People with enamel hypoplasia;

● If there are problems such as caries and wedge-shaped defects, it needs to be filled before whitening;

● Gingivitis and other oral diseases need to be treated first.

Do not blindly pursue the whitening effect

Depending on the product used, the whitening effect can last for 1 to 2 years. The specific maintenance time depends on daily maintenance, the frequency of eating dark foods, and tooth whitening in the later period can also achieve a consolidation effect. However, it is necessary to ask a professional doctor to help customize the personalized dental tray, and wear it under the guidance and help of the professional doctor.

The whitening effect varies from person to person, and whitening can improve several shades levels at a time. But if you're after a Hollywood white, you may need multiple treatments. And we need to make a clear point: the color of teeth should not be too white. In fact, the whiteness of the teeth best matches the whiteness of the septum (whites of the eyes). Black people have very white teeth, but you don't actually notice that the whites of their eyes are also very white, so they don't look out of place.

So, if you don't have special needs such as being on camera, don't blindly follow the Hollywood white!