The only way to get calculus on the inside of your teeth is to go to your nearest dentist for supragingival scaling treatment, which is often referred to as scaling. Scaling is an operation that completely removes the calculus and plaque from the mouth through ultrasonic waves, a relatively professional and technical operation that can take up to three hours or even longer with a traditional manual scaler, and currently takes about an hour with ultrasonic waves. Scaling is currently the most basic and convenient operation for periodontal treatment, which enables greater control of calculus and plaque in the mouth. After scaling it is recommended to brush the inner side of the teeth as much as possible, some people brush only the surface of the teeth and not the inner side of the teeth, which will make the inner side of the calculus grow out especially fast. Therefore, scaling is the way to remove calculus, and brushing is the way to control calculus and make it grow slowly.