The sanding agent in toothpaste is mainly used to remove the dirt and dental plaque on the surface of teeth, so as to make the teeth cleaner and smoother. Sanding agents are usually composed of silicate, calcium carbonate, aluminum hydroxide and other substances. They have a certain friction force, which can remove the dirt and dental plaque on the surface of teeth without causing damage to teeth. However, if used excessively or for a long time, the abrasive may cause damage to the teeth, so it is recommended to pay attention to the appropriate amount and use time.
