Dental calculus is formed by the accumulation of dental plaque, brushing is an effective way to prevent dental calculus, and removing dental calculus is recommended to go to the hospital for ultrasonic dental cleaning. 1. Brushing: The purpose of brushing is to brush off the tartar deposited on the teeth in time, which is a simple and effective way to prevent and control dental calculus. It is recommended to choose a toothbrush with soft bristles and a small head to minimize the damage to the teeth. 2. Teeth cleaning: teeth cleaning is recommended to go to the hospital for ultrasonic teeth cleaning, it is recommended that 1~2 times a year, after cleaning can be polished on the teeth, which helps to maintain the teeth. After cleaning may appear after brushing bleeding or sensitive to hot and cold stimuli, usually a week later can disappear, daily attention to the maintenance of teeth, rinse your mouth after meals, brush your teeth before going to bed.