NiTi or Stainless Steel wires are coated with Teflon/5META/Tooth coloured epoxy resins. 4 Coating elements are synthetic resin or plastic resins such as epoxy resins.three Coating enhances esthetics and lowers friction but there are a few negatives way too. Orthodontic archwires are the main assist to realize desirable tooth movement. https://www.ortix.co.uk/wires/