The dentist cleans the teeth on regularly scheduled visits to remove plaque and tartar, in order to maintain good oral hygiene and prevent gum disease. In the case of onset of gum disease also known as periodontal disease, a deep cleaning technique is employed known as scaling and planing. This is a non-surgical procedure carried out in several sittings. The process involves meticulously cleaning of the root surface to remove the plaque and tartar/calculus. Then the dentist will try to rid the gums of the disease-causing bacteria. Typically, it will take 2 to 4 visits to complete the treatment. Each sitting will last for an hour or a little more than an hour. The dentist might work on one section of the mouth at a time depending on the stage of the disease. Sometimes local anaesthesia is given to the patient to smoothen the procedure. The post-treatment visit involves the dentist checking if the gums are fine. In most cases, the gums will be fine, except for patients who are being treated for advanced stages of the disease. In which case, the dentist will advise surgical procedure by a periodontist. Otherwise, in normal cases, the dentist will schedule periodic maintenance visits to perform routine cleaning and careful examination of gum tissue. They will monitor and try to maintain the oral hygiene to ensure that the treatment works, the gums stay healthy and do not cause any further issues for the patient. Patients are also advised to follow a proper oral care routine on a daily basis to prevent recurrence of the disease in future.