Routine scaling does not usually remove the enamel from the teeth. Tooth enamel is the hardest organ in the human body and usually requires a special diamond or tungsten knife to cut through it. The purpose of conventional scaling is to remove the tartar, plaque and pigment from the tooth surface and gums, and generally does not wash away the enamel. Scaling is divided into two parts: cleaning and polishing, and the more commonly used cleaning methods are ultrasonic scaling and sandblasting scaling. Ultrasonic scaling uses high-frequency acoustic vibrations to generate airflow and force to shatter the calculus attached to the tooth surface. Because the probe is relatively round and blunt, even if it is placed on the tooth surface, it will not cause direct damage to the tooth enamel; sandblasting scaling uses high-pressure airflow to spray special silica salt sand or sodium bicarbonate onto the tooth surface to remove the adhesions on the tooth surface that are not easily scraped off. Polishing is to use a polisher dipped in polishing paste or toothpaste to polish the tooth surface after the teeth are cleaned, and to remove the tiny tartar, plaque and pigment on the tooth surface by rotating the polisher at low speed to make the tooth surface cleaner. No damage is caused to the enamel during this process. It is important to note that for 2 weeks after scaling, do not eat cold, hot, sour or other stimulating foods to avoid irritating the teeth and causing soreness. In addition, it is not recommended to drink coffee, strong tea, etc., or eat heavily colored foods such as curry and chocolate after scaling to prevent food pigments from being deposited on the tooth surface.