Rust is generally referred to as calculus, and the main method of calculus removal is ultrasonic dental cleaning. Ultrasonic scaling is a relatively common method to remove dental calculus in the clinic, and the effect is relatively good, other methods may not be able to achieve the efficacy of completely removing dental calculus. Usually after the appearance of dental calculus must be regular medical scaling, remove dental calculus, but also need to pay attention to personal oral hygiene, if you often eat more pigmented food or often smoke, may also lead to tooth color change, affecting personal aesthetics. Usually need to be diligent in brushing and rinsing, every day after eating need to clean the teeth inside the residual material, and at night before going to bed need to brush, so as not to lead to damage to the teeth.