An orthodontic arch wire is the wire that attaches to the braces. It is known as an “arch wire” because your prime enamel comprise your best arch, and your bottom tooth comprise your base arch. Nickel Titanium: These wires have a mix of 50 percent nickel and 50 percent titanium. https://orthodonticsteelwire91345.xzblogs.com/73758012/considerations-to-know-about-nickel-titanium-wires