Plz specify the reason - is it due to pain that u are unable to close ur mouth or is there any hindrance due to which you are unable to close
Next Steps
If it's due to pain then plz consult your doctor and they would prescribe you suitable anti inflammatory, if it's due to hindrance then the needful would be done by your doc.
Health Tips
Do not try to fidgit with your brackets or wire by yourself as you may end up dislodging them or hurting yourself .