Most of the toothpastes contain whitening and anti-inflammatory ingredients, such as Chinese toothpaste, Colgate toothpaste, etc. Therefore, in the choice of toothpaste, you can brush your teeth with toothpaste produced by regular manufacturers, and clean the tooth surface carefully, clean every tooth surface, remove the soft scale and yellow stains on the tooth surface, so that the teeth look very white. If you want to whiten your teeth due to tetracycline, fluorosis or natural yellow teeth, there is no way to solve the problem by brushing with toothpaste, you need to go to the hospital to do cold light whitening, through which the whitening agent is introduced into the interior of the teeth to neutralize the pigment inside the teeth in order to enhance the effect of tooth shades. If the yellowish-brown pigment and tartar are deposited on the teeth, the teeth are yellow and unattractive to go to the hospital for scaling to clean out the pigment and tartar completely to achieve the effect of whitening teeth.