The greatest difference between Ni/Ti and Cu/Ni/Ti are:

  • TTR on Cu/Ni/Ti (5°) is half as much as Ni/Ti (10°) - This provides greater consistency on the performance of Cu/Ni/Ti.
  • Cu/Ni/Ti has much smaller hysteresis – The loading forces are smaller than Ni/Ti, making the wire insertion into the bracket slot easier, also greater unloading forces make the teeth move more efficiently.
  • Cu/Ni/Ti has significantly smaller residual strain and provides greater unloading forces at final stages of recovery.
  • This results in more complete recovery of the wire and finishing before the next wire.

Diffrence through graphs



  • Cu/Ni/Ti is Consistent
  • Low Loading Forces
  • High Unloading Forces
  • Low hysteresis
  • More Resilient
Regular NiTi

  • Wire to Wire Consistency
  • Transformation temli + / -- 5 degrees
  • Wider Hysteresis
Copper NiTi

  • 1/3 Less friction
  • Wire to Wire Consistency
  • Transformation temli + /-- 2 degrees (Af)
  • Reduced Hysteresis
  • No Intermediate lihase

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