Black smoke stains on the teeth caused by smoking can be removed by ultrasonic cleaning to remove the dark brown pigmentation. Ultrasonic cleaning is also commonly known as scaling treatment, scaling treatment is the use of ultrasonic high-frequency vibration, with a large number of water spray rinsing, to completely remove the surface of the teeth of the tobacco stains, tea stains and other pigmentation, but also around the gums of tartar and plaque thoroughly clean, play a role in the treatment and prevention of periodontitis and gingivitis effect. After the ultrasonic cleaning, the doctor will also highly polish the surface of the teeth, so that the enamel on the surface of the teeth becomes highly polished, so that it is not easy to re-deposit pigmentation, as well as other food debris. For patients with dark brown pigmented teeth, it is recommended to quit smoking as soon as possible, as quitting smoking is good for oral hygiene and general health.