A headgear is a detachable device that affixes to braces using elastic bands. It is comprised of a band that encircles the rear of the head, and a metal wire that runs from the band to the front of the mouth and links up with the braces. To know more visit https://www.collegestreetfamilydental.com/blog/950403-do-i-need-a-headgear-for-braces
