Smoke stained teeth usually cannot be restored to whiten on their own after quitting smoking and can only be whitened by some treatments, but the exact degree of whitening and the time required depends on the whitening method. Clinically, ultrasonic scaling and sandblasting are commonly used for the removal of tobacco stains. These physical methods can remove the surface pigment of the teeth and expose the original color of the teeth. If the results are not satisfactory and you want to change the color of the teeth themselves, you can also use teeth whitening methods, which are bleaching methods. In-office bleaching usually requires about 1-2 treatments to achieve the whitening effect; home bleaching requires adhering to the use of whitening agents for weeks to months as required, and within 1-2 weeks after whitening, try not to consume heavily pigmented drinks or foods, such as coffee, cola, strong tea, soy sauce, etc. In addition, you can also take dental veneers to whiten your teeth, which can achieve instant whitening effect, but this method requires tooth grinding treatment, so you should know well before choosing. It is important to note that teeth whitening is not a one-time thing, and regular checkups and oral maintenance are required. At the same time, it is recommended that the majority of people who have quit smoking, to maintain a good state of abstinence, adhere to the end, to quit smoking completely, so as to effectively prevent the teeth from staining again.