If the dental department of the hospital is not subdivided into periodontal department, the scaling patients can go to the oral medicine department or oral comprehensive department. Scaling is also called ultrasonic scaling in clinical practice, and is the most conventional method of treating periodontitis and gingivitis. Scaling is a method of removing tartar and plaque from periodontal pockets and teeth by means of ultrasonic high-frequency oscillation with water mist rinsing to create a good periodontal environment to treat and prevent periodontitis and gingivitis. Scaling is a routine treatment in periodontology. For patients with severe periodontitis, scaling alone cannot yet completely remove the infected material around the gums, and the periodontist needs to perform deep periodontal scaling and root planing on the patient. In addition to professional periodontists who can perform scaling, oral surgeons or general dentists can also perform scaling.