Orthodontic wax is applied to the brackets or archwires of the teeth, taking care not to place it on the oral mucosa or ulcers. Orthodontic wax can be used to protect the mucous membrane of the mouth when the brackets or archwires irritate the mucous membrane during orthodontic treatment and cause ulcers. Take a small piece of orthodontic wax with the small tool that comes with the orthodontic wax, roll it into a circle, find the bracket or archwire that corresponds to the ulcer or mucous membrane irritation, and bond the orthodontic wax on top of the bracket or archwire, and be careful not to put the orthodontic wax on the ulcerated surface. The function of orthodontic wax is to avoid ulcers or inflammation during the orthodontic process. The orthodontic wax is removed when eating or drinking, and needs to be replaced with a new orthodontic protective wax after eating.