Spacers are placed between your teeth before you are fitted with appliances. These small elastics fit snugly between certain teeth to help move the teeth slightly apart so that bands can be fitted around them a week later. Spacers can be uncomfortable, especially when you try to sleep. A Tylenol or another aspirin substitute may be taken to help relieve the soreness. A spacer can fall out on its own if it has made enough space between your teeth. Unfortunately, it can also fall out if you poke it with your tongue or fingers. Sticky foods and candy may also cause a spacer to fall out. If you do lose a spacer, find out if it has done its job by slipping some dental floss between the two teeth. If the floss gets stuck, the spacer hasn’t made enough space, and you’ll need to get it replaced before your banding appointment.