Dental rust is clinically known as pigmentation, mainly due to the frequent consumption of pigmented things, such as chocolate, black rice, red wine, etc., or the love of tea, resulting in the deposition of food pigments on the tooth surface causing dental rust, accompanied by dental calculus. After cleaning the calculus and part of the pigment by ultrasonic method, the surface of the tooth is cleaned by sandblasting and the surface is polished to make the surface of the tooth smooth and not easy to deposit the pigment and calculus. It is not recommended to drink red wine or eat anything with color within one month after the cleaning and sandblasting treatment in the hospital.