There is still hidden pain in January after wearing braces after root canal treatment, which is related to malocclusion, postoperative infection, tooth loosening and other factors, and the braces should be adjusted appropriately according to the condition, and then medication. 1. Malocclusion: root canal treatment wearing braces, such as teeth do not adapt to a short period of time, there will be malocclusion, chewing pain. The position of the braces should be adjusted appropriately, as well as the degree of elasticity. 2. Postoperative infection: the root of the tooth is infected for a short period of time after root canal treatment, which is easy to cause inflammatory reaction and lead to tooth pain. Oral antibiotics can be prescribed to reduce inflammation, such as cefixime, metronidazole, tinidazole, etc.; when the pain is severe, acetaminophen can be taken orally to relieve pain. 3. Tooth loosening: If root canal treatment wearing braces, so that the recovery is not good, easy to cause tooth loosening, causing hidden tooth pain. At present, it needs to be re-fixed to reset the tooth and reduce the pain. Such as root canal treatment after wearing braces for a month still hidden pain, do not handle privately, should promptly consult a doctor, and under the guidance of a professional physician targeted treatment.