Brackets are the parts of braces attached to teeth with a special adhesive. They are generally positioned in the center of each tooth. If the bracket is off center and moves along the wire, the adhesive has likely failed. Call your orthodontist, who will determine the course of action.
If the loose bracket has rotated on the wire and is sticking out, attempt to turn it back into its normal position and call your orthodontist to schedule an appointment to have it reattached. You may wish to put orthodontic wax around the area to minimize the movement of the loose brace. If you are in pain, please call your orthodontist and inform them of the circumstance. If you are not in pain, this is not a true emergency. Please call the orthodontist at your earliest convenience to schedule an appointment to reattach the brace to the tooth.
Remember, brackets can become loose as a result of chewing on hard, sticky or chewy foods or objects as well as from physical contact from sports or rough housing.
Be sure to wear a protective mouth guard while playing sports!