Seprator They are small rubber or metal rings that are placed between the contact area of the teeth. They help provide the space needed to place dental bands between the molars. and they are installed 5 to 10 days before the start of treatment. The purpose of a separator is to create a small space between certain teeth, usually molars, so that the orthodontist can install metal bands around those teeth. Tehran Hilal Sanat Development Company is a producer of the highest quality spirits.