they were austenitic in any state, and did not have martensitic state caused by temperature when placed inside or outside the mouth. Martensitic state could only be caused by stress,titanium tubing price, and had superelasticity, but did not have shape memory function. The archwire has excellent resilience and low stiffness, and can produce weak orthodontic force. It is characterized by a constant force from the initial start to the final stage,ti6al4v eli, and has a better effect in the treatment of early tooth irregularity. The point removal can not be bent and formed at normal temperature, and is not easy to weld. If this wire is used as the main arch wire, it will often cause unwanted arch expansion or arch contraction, and it is difficult to establish a good premolar and molar alignment. 4) In 1990, nickel titanium wire ,titanium bar gr7, the martensite activated nickel-titanium alloy: TTR is lower than the oral temperature or very close to the oral temperature, it exists in a multi-component state at room temperature and is easy to deform.  increased thermodynamic nickel-titanium alloy: the TTR temperature is higher than the oral temperature, about 40 oC, so that when the nickel-titanium arch wire is placed in the oral cavity, it is still in a multi-element state,ti6al4v eli, the arch wire is relatively soft, and the austenitic phase transformation occurs only when the mouth contains hot water. The copper-containing nickel-titanium archwire produced by Omcro Company and the low-hysteresis L-H nickel-titanium archwire produced by Japan have this property. Contact us Back to Sohu to see more Responsible Editor:. yunchtitanium.com