Mandibular disorders can be caused by oral diseases, mental factors, trauma, etc. The cost of a closed shot is usually less than $50. 1. Closure injection, or closed treatment, is a mixture of local anesthetic and glucocorticoid that is injected into the affected area to achieve analgesia. The most commonly used is usually a mixture of lidocaine and dexamethasone. Lidocaine is $1-2 a shot, glucocorticoids are cheap at $1-2 a shot and expensive at $5-6 a shot. With the addition of a disposable syringe and the cost of the injection, etc., it is usually less than $50. 2. After playing closed injection need to observe about half an hour, no nausea, vomiting, dizziness and other adverse reactions of patients, you can leave on their own, try not to rinse the day of the injection site, immersion in order to avoid infection; if there is a pale face, numbness of the limbs, high fever and other adverse reactions, need to be promptly re-examined to see a doctor. Closed injection may appear injection site atrophy, hormone dependence and other side effects, long-term injection is not recommended. If the diagnosis of mandibular disorder is confirmed, early and standardized treatment is recommended to reduce the adverse effects of the disease. All medications should be used as prescribed.