Wearing braces clinically known as orthodontic correction, it is recommended not to smoke, smoking may affect the periodontal health, resulting in poor tooth movement, slow wound healing. 1. Smoke contains nicotine, tar and other harmful substances, continued stimulation of periodontal tissues can easily lead to inflammation, or aggravate existing periodontal disease. 2 Orthodontics is a process of physiological movement of teeth between periodontal tissues, periodontal health is important. Smoking increases the chances of developing periodontitis, and orthodontic efficiency is naturally reduced. 3. Most orthodontic patients need to have teeth extracted or supportive nails implanted, which will leave wounds. Tobacco can slow down or even prevent the wound from healing. Therefore, smoking is not recommended when wearing braces.