It is normal to have soreness on the cheeks and lips from having a new brace. The teeth are also uncomfortable when you bite or chew. This is only temporary and it will get better in one or two weeks. Please use your wax if the brace is rubbing and stick to soft food.
HOW TO CARE FOR YOUR RETAINERS
Retainers are used to maintain the wonderful results achieved by wearing braces.
Teeth can move throughout life so retainers are fitted after the braces are removed and should be worn at night throughout your life to keep your smile beautiful.