Correctional system arch wire, so the patient's discomfort will reduce greatly.Because there are several different straight wire bow rectification technology, MBT technology is recommended to use 0.016 inches thermal activated nickel titanium arch wire DEMON self-locking braces technologies recommended by Omcro company production of thermal activated nickel titanium alloy containing copper arch wire, and correcting technology is recommended to use 0.016 inches hyperelastic nickel titanium alloy used in early row of neat the arch wire.Nickel titanium spring: nickel titanium push spring and the tension spring is a spring for orthodontic teeth, especially with niti super elastic, suitable for orthodontic treatment for the development of the gap between teeth and pull in different directions of teeth.The nickel titanium coil spring elongation 1 mm can produce about 50 g force.Nickel titanium coil spring has a high elastic properties, can be produced under tensile state is relatively soft, stable endurance.Force attenuation is small, can produce in accordance with clinical mobile teeth required ideal orthodontic force.In line with the physiological requirements.Nickel titanium wire tension spring high elastic and permanent deformation rate is extremely low, compared with the same diameter stainless steel wire, the treatments of the releasing force is 3.5 4 times.In orthodontic treatment for applications, the patient pain is light, not only feel soft power lasting, and follow-up time reduced, shorten the treatment course, improve the curative effect, is a kind of new excellent mechanics in orthodontic treatment device.
when the arch wire when the arch wire was ligated to braces, that is activated when the stress and the arch wire is slowly getting back to the arch wire while moving the teeth the gap between its original condition when the stress is small.The lag is very small.SOMA and compared the LH arch wire and other nickel titanium alloy wire stress strain curve of L - H minimum range of the lag of the arch wire, this feature makes the arch wire has the advantage of low load and constant light force, low initial slope of the curve at the same time, show that the stiffness of the arch wire is low, the rest of the type of nickel and titanium alloy hysteresis curve indicates that the arch wire, which has less rigidity are clearly L - H arch wire has obvious mechanical advantage.Because of LH silk nickel titanium components content of titanium in proportion is generally high nickel titanium arch wire, so call it titanium nickel wire, and has proved its effect in shock absorption is stronger.LH nickel titanium wire of another characteristic can be bending, and can be used to heat treatment equipment heating sizing, therefore LH nickel titanium wire can also be from a row of neat flat, open bite to close the gap, and finally completed stage, the upper one is the arch wire can complete treatment, as long as each phase remove arch wire bending shape needed for good, then use heat treatment of the instrument will be shaped, strengthen the hardness.Currently in clinical use of L - H to enlarge the arch wire bow treatment, open jaws, partial jaws and diseases of the jaws, because of its strength in a steady and soft, the effect is better.At the same time often used J hook to improve the shortage of the arch wire is soft.Although MEAW technique to correct the above wrong jaw also have ideal effect, but the bending the arch wire of heavy and complicated is often makes many physicians.So some doctors to use rocking chair similar to that of the mechanical system model of nickel titanium arch wire with front teeth vertical traction, though this has a similar effect
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