Removing dental calculus is the most routine content of tooth cleaning. In fact, the basic medical system for residents in China already includes tooth washing and tooth washing. The most important way to remove calculus is to use ultrasonic vibration instead of simple and violent mechanical removal of calculus. Dental tissue and dental calculus have different densities and substances. Under the vibration generated by ultrasonic wave, dental calculus and dental tissue vibrate at the same time. When the vibration frequencies of two objects are different, they will naturally fall off slowly. Therefore, tooth cleaning will not cause harm to tooth tissue. Of course, after tooth washing, you may find that the gap between the roots is relatively large, so some people say that you can't wash your teeth, but the gap between the teeth becomes larger after tooth washing, which just shows that calculus has caused the gingival papilla in the wedge-shaped space between the roots to shrink back. Therefore, after removing dental calculus, it will be found that the gingival papilla retreats and the gap between teeth becomes larger after tooth washing, which has caused problems caused by dental calculus. Be sure to wash your teeth regularly in the future.