 To hold the wires in place, the Damon System uses small sliding doors.The addition of 'stops' on the wires helps prevent the wire from becoming displaced from its intended location.In passive self-ligating braces, orthodontic treatment begins with very light wires 0.014 inch in diameter that are made of an alloy of copper, nickel, and titanium (CuNiTi) and have a non-anatomical shape because they are wider than the natural arch.