Why do I have to polish my teeth after scaling? The essence of scaling is to thoroughly remove the dirty plaque and tartar formed by plaque mineralization accumulated around the teeth, and the more common method is ultrasonic scaling, which is to shatter the tartar by instrument vibration. Therefore, the surface of the teeth after treatment will be relatively rough, compared with before scaling, people always feel that the tooth surface is astringent and not as smooth as the original. Moreover, the rough surface of the teeth is more conducive to the attachment of dirty things, and if not taken care of, the teeth will soon be dirty again. Therefore, experts suggest that polishing can also be done after scaling to keep the surface of the teeth as smooth as before.