The Elements that enable these to spring make them liable to breaking very easily. Titanal or Orothonol add on the somewhat greater fortification from the wires. The composition in the wire has fifty five% Nickel and forty five% Titanium. The main nickel-titanium orthodontic wire alloy was marketed from the Unitek https://vietbizdirectory.com/listings13089996/a-simple-key-for-rectangular-niti-wires-unveiled