You can make your teeth white by ultrasonic cleaning, hand scraping, sandblasting and polishing after quitting smoking. It is recommended to go to a professional dental clinic for treatment. 1. After quitting smoking, there are usually a lot of tobacco stains and long-term formation of calculus on the surface of the teeth, which need to be whitened under the professional operation of periodontists; usually it is necessary to carry out ultrasonic scaling to remove most of the calculus, and then sandblasting to deal with the fine calculus or tobacco stains and other pigmentation; after the above treatment, the surface of the teeth is uneven, and it is necessary to cooperate with the polishing treatment, so as to make the surface of the teeth become smooth. 2. Long-term smokers tend to have poor oral hygiene and a certain amount of calculus at the root of the teeth, which need to be treated by manual scraping; the treatment cycle varies from patient to patient, and it usually takes 2 to 3 times to achieve complete whitening. If you have any discomfort symptoms, you should go to the hospital in time and consult a specialist for guidance.