Clinical application of titanium nickel alloy wire

1. Nickel titanium spring
Nickel-titanium push spring and pull spring is a spring used in orthodontics, with nickel-titanium super elasticity, which is suitable for orthodontic treatment to open up the gap between the teeth and pull the teeth in different directions. The nickel-titanium coil spring is extended by 1mm to produce about 50g of force. Nickel-titanium coil spring has high elastic properties, and can produce relatively soft and stable continuous force in the tensile state. The attenuation of the force is small, which can produce an ideal orthodontic force that meets the needs of clinical tooth movement. Meet the physiological requirements. Nickel-titanium wire spring has high elasticity and very low permanent deformation rate, and the correcting force released is 3.5-4 times less than that of stainless steel wire of the same diameter. Therefore, in the application of orthodontic treatment, patients not only have light pain, soft and durable feeling strength, but also reduce the time of return visit, shorten the course of treatment, and improve the curative effect, which is a new excellent mechanical device in orthodontic treatment.

2. The bow wire of the dental correction system
Due to the super elasticity and shape memory properties of Nitinol bow wire and the low stress-strain curve, Nitinol bow wire is currently routinely used as the first bow wire to be incorporated into the treatment system, thus greatly reducing the discomfort of patients. Due to the existence of several different straight wire bow correction technologies, the MBT technology recommends the use of 0.016 inch heat activated Nitinol wire (HANT wire), and the DEMON self-locking bracket technology recommends the use of copper containing heat activated Nitinol wire produced by Omcro company (phase change temperature is about 40 degrees). O-PAK correction technique recommends the use of 0.016 inch super elastic nickel-titanium alloy bow wire for early leveling.