Reverse wire is one of the tools that corrects the arch of the teeth and jaw with its arch, in such a way that it is connected in a small groove inside the brackets and fixed in place with small rubber rings or thin metal wires. The wires apply pressure to the teeth to guide them into the correct position. It has rand and rack numbers. It is sold in packs of 10. Tehran Helal Industry Development Company is a producer of all kinds of orthodontic wire with the highest quality.