A Severe Toothache or Bleeding
Broken Tooth or Jaw
Lost Dental Filling or Crown
Orthodontic Issue

If your appliance is poking you, place wax on the offending part.
If your bracket or band is still attached to the wire, you should leave it in place and put wax on it if needed for comfort. If the bracket or band can be removed easily, place it in an envelope and save it to bring to your next appointment.
See your dentist as soon as possible.