The yellowing of teeth caused by smoking is usually a sign of pigmentation, so if you want your teeth to become white, you need to go to a regular medical institution for scaling, chemical bleaching, masking whitening and other medical methods that can restore yellow teeth to white. 1, scaling: that is, scaling, including manual scaling and ultrasonic scaling two methods, manual scaling when patients need to open their mouths for a long time, so it is not comfortable, while ultrasonic scaling is faster. The interval between scaling depends on the patient’s specific situation, which may vary from a few months to a few years. However, the color of teeth after scaling does not achieve the effect of pure white, because the dentin is yellowish, so the normal tooth color is slightly yellow; 2, chemical bleaching: common bleaching methods include cold light whitening, bracket-type whitening, tooth paste whitening, containing rinse whitening, etc., which can remove the tooth surface pigmentation caused by smoking through chemical ingredients; 3, cover whitening: usually using materials such as resin directly attached to the tooth surface However, materials such as porcelain can also be used, but the cost is relatively higher for patients with dental fluorosis and enamel hypoplasia. In addition, patients should not believe in the prescriptions or miracle remedies, such as brushing with substances such as vinegar, baking soda, salt or dried orange peel ground into powder, in order to avoid damaging the tooth surface enamel or surrounding gum structure and inflammation and other conditions. You should brush your teeth regularly on a daily basis and be careful to use the correct modified pasteurization method of brushing. Smoking not only causes changes in the teeth, but is also harmful to health, so it is recommended to quit smoking.