This is the only way to whiten teeth by chemical means without grinding teeth. You only need to go to the hospital once, and it takes 1 hour. Your teeth can be white for at least three years, and the price is good at around 1000.

Suitable for: friends who need temporary whitening teeth (such as job hunting or marriage) and have limited budget.

Disadvantages: the duration is only three years. After three years, due to the remineralization of enamel and the pigment effect of colored food, it will slowly change back to its original color. Here, we also want to talk about whitening toothpaste. This is actually a byproduct of cold light whitening. The principle is the same, but the effect is slower. At first, it was used as a maintenance function after cold light whitening abroad, and later some manufacturers began to sell it separately. In other words, whitening toothpaste can be used, but you must buy it from a regular manufacturer, and you must follow the instructions and not use it too frequently. In addition, this whitening method is also very affordable.

2, resin veneer whitening

It is to use the resin for filling teeth to carve a shape on the outside of the teeth to cover the original color. Because this method has high technical requirements for doctors, it is easy to cause a series of problems such as gingivitis and periodontitis if it is not done well, so it has been gradually eliminated now. Don't be fooled, that's what those beauty salons advertised as "6D don't grind your teeth, show off white porcelain".

3. All-ceramic veneer

This is the most lasting and effective method. But you need to grind your teeth, take the model, and then send it to an all-ceramic tooth factory to make an all-ceramic tooth surface. In fact, this veneer is very firm and will hardly fall off, that is, it can achieve permanent whitening. But the disadvantage is that it is very expensive and costly. The price of a tooth is 3000+.