Teeth that already have yellow tartar can be scaled, usually by choosing an ultrasonic shock scaling. If there is more yellow tartar and calculus below the gums, subgingival scaling treatment is required. Usually you can choose ultrasonic scaling or manual scaling. Yellow scale on teeth is caused by the accumulation of plaque left over from long-term brushing, so you should do a good job of controlling your own plaque, which is mainly done by brushing your teeth every day. Usually you need to brush your teeth twice a day, once in the morning and once in the evening, and make sure to brush your teeth effectively and master the correct way of brushing, generally choose the pasteurization method. Usually you can also use mouthwash appropriately, but not for a long time, choose compound chlorhexidine rinse can effectively inhibit the development of bacteria in the mouth.