There are two kinds of tooth whitening, 1, which is drug whitening. The specific method is to make a transparent braces, and then apply the medicine in the braces. /kloc-wear it for 2 to 3 hours every night for 0/4 days, and the teeth will gradually turn white. Its advantages are less damage to teeth and low price. The price of whole mouth whitening is around 800 yuan. The disadvantage is that it takes a long time for 14 to turn white.

2. Cold light whitening. The method is to smear the medicine on the tooth surface and irradiate it on the tooth with a machine, so that the medicine can be absorbed quickly and the whitening effect can be achieved. The advantage is that time is fast, and teeth can be whitened in 40 minutes. The disadvantage is that it is harmful to teeth and expensive. The price of full-mouth whitening is around 1800 to 2500 yuan.

Dental problems, it is recommended to go to a professional hospital.

I hope my answer can help you.

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