The process of dental scaling usually involves preoperative examination, operation under local anesthesia, and postoperative care after treatment. 1. Usually, patients should undergo blood test and drug allergy test before the operation to make sure that they have no allergy symptoms and contraindications. Then, local anesthesia will be injected into the patients, and ultrasonic or manual scaler will be used to extend to the root of the gums to scrape away the plaque and calculus at the gums. 2. Generally, after scraping plaque and calculus, patients can use chlorhexidine or 3% hydrogen peroxide to rinse the gums under the guidance of the doctor, to rinse out the local irritants and flush out the gingival sulcus, so that the gums will return to the normal state. Usually 1 to 2 hours after the operation, patients will feel the root surface exposure and tooth sensitivity, postoperative patients can use antibiotics, such as metronidazole and other drugs to prevent infection. It is recommended that patients need to use the medication under the guidance of a professional doctor, and should not use the medication blindly to avoid adverse consequences.