Clinical application of nitinol wire
1, for the early alignment of the dentition of patients
Due to the hyperelastic and shape memory properties of NiTi arch wire and the flow stress-strain curve, NiTi arch wire has been clinically routinely used as the arch wire for initial inclusion in the orthodontic system. As a result, the patient's discomfort may be greatly increased reduction. As there are several different straightening techniques.
2, NiTi Spring: NiTi push spring and extension spring is a kind of spring used for orthodontics, which is special for NiTi hyperelasticity. It is suitable for orthodontic treatment to open up the gap between the teeth and pull the teeth in distinct directions. Nickel-titanium coil spring elongation of 1mm can produce about 50g force. Nickel-titanium coil spring with high elastic properties, in the tensile state can produce a more gentle, stable and sustainable. The attenuation of force is low enough to produce the ideal orthodontic force required for clinically moving teeth. Meet the physiological requirements. Ni-Ti wire extension spring of extraordinary elasticity, permanent deformation rate is very low, compared with the same diameter stainless steel wire, the correction force of 3. 5 to 4 times the release. Therefore, in the orthodontic treatment, the patients not only have the advantages of light pain, soft and lasting sensory power, reduced referral time, shortened the course of treatment and improved the curative effect, which is a new and excellent mechanical device in orthodontic treatment.
3, l-h arch wires are Japan's Dr. Soma and other research and development, produced by Tomy. "LH" is named "Low Hysteresis", that is, when the arch wire is lighted to the bracket when the arch wire is activated, that is, the stress generated when the arch wire is activated and the arch wire is slowly restored when the tooth is moved The difference between the original stress generated when small. That lag is small. SOMA et al compared the stress-strain curve of LH arch wire with other Ni-Ti alloy filaments, and the LH arch wire possessed the least hysteresis. This characteristic made the arch wire have the advantages of low load and sustained light force, while the initial slope of the curve was low, indicating that the stiffness of the arch wire is low. The lag curves of the additional types of nickel titanium alloy arch wires show that they have greater rigidity. Obviously, LH arch wires have obvious mechanical advantages. Because of the content of titanium wire in LH wire, the content of titanium is higher than that of conventional nickel titanium wire, so it is called as titanium-nickel wire, and it is proved by experiments that the shock-absorbing effect is stronger. LH Nickel Titanium wire is another feature that can be bent, and heat treatment equipment can be heated stereotypes, LH nickel-titanium wire can also be aligned, open bite to close the gap, and the final stage of completion, each one up and down an arch wire That can be completed treatment, as long as each stage will be taken out of the arch wire curved shape needed, and then heat treatment equipment will be shaped to strengthen the hardness can be. Currently in clinical use of L-H arch wire for arch surgery, correction of open jaw, partial jaw and the reverse jaw, thanks to its power of sustained stability and soft, the effect is better. At the same time often with the use of J hook to improve the soft silk were inadequate. Although the MEAW technique has also turned out to be ideal for orthodontic treatment of the above malunion, the cuffing of cuffs often discourages many physicians. Therefore, some physicians changed the use of rocking chair type NiTi arch wire similar to the mechanical system with the vertical traction of the anterior teeth. Despite the fact that this also has the similar effect, it is always felt that each independent tooth moves less than the MEAW technique when compared with the MEAW technique. The rocking chair type NiTi wire is a continuous arch wire, and there is no way to end it. Therefore, the angle between the bracket and the curvature of the arch of the arch wire determines the angle of each tooth, unlike the individual adjustment of the angle of each tooth in the MEAW technique. LH nickel-titanium bending on the use of rocking chairs, and then use the arch wire bending in the mouth after bending or bending before. The effect is quite satisfactory.
1, for the early alignment of the dentition of patients
Due to the hyperelastic and shape memory properties of NiTi arch wire and the flow stress-strain curve, NiTi arch wire has been clinically routinely used as the arch wire for initial inclusion in the orthodontic system. As a result, the patient's discomfort may be greatly increased reduction. As there are several different straightening techniques.
2, NiTi Spring: NiTi push spring and extension spring is a kind of spring used for orthodontics, which is special for NiTi hyperelasticity. It is suitable for orthodontic treatment to open up the gap between the teeth and pull the teeth in distinct directions. Nickel-titanium coil spring elongation of 1mm can produce about 50g force. Nickel-titanium coil spring with high elastic properties, in the tensile state can produce a more gentle, stable and sustainable. The attenuation of force is low enough to produce the ideal orthodontic force required for clinically moving teeth. Meet the physiological requirements. Ni-Ti wire extension spring of extraordinary elasticity, permanent deformation rate is very low, compared with the same diameter stainless steel wire, the correction force of 3. 5 to 4 times the release. Therefore, in the orthodontic treatment, the patients not only have the advantages of light pain, soft and lasting sensory power, reduced referral time, shortened the course of treatment and improved the curative effect, which is a new and excellent mechanical device in orthodontic treatment.
3, l-h arch wires are Japan's Dr. Soma and other research and development, produced by Tomy. "LH" is named "Low Hysteresis", that is, when the arch wire is lighted to the bracket when the arch wire is activated, that is, the stress generated when the arch wire is activated and the arch wire is slowly restored when the tooth is moved The difference between the original stress generated when small. That lag is small. SOMA et al compared the stress-strain curve of LH arch wire with other Ni-Ti alloy filaments, and the LH arch wire possessed the least hysteresis. This characteristic made the arch wire have the advantages of low load and sustained light force, while the initial slope of the curve was low, indicating that the stiffness of the arch wire is low. The lag curves of the additional types of nickel titanium alloy arch wires show that they have greater rigidity. Obviously, LH arch wires have obvious mechanical advantages. Because of the content of titanium wire in LH wire, the content of titanium is higher than that of conventional nickel titanium wire, so it is called as titanium-nickel wire, and it is proved by experiments that the shock-absorbing effect is stronger. LH Nickel Titanium wire is another feature that can be bent, and heat treatment equipment can be heated stereotypes, LH nickel-titanium wire can also be aligned, open bite to close the gap, and the final stage of completion, each one up and down an arch wire That can be completed treatment, as long as each stage will be taken out of the arch wire curved shape needed, and then heat treatment equipment will be shaped to strengthen the hardness can be. Currently in clinical use of L-H arch wire for arch surgery, correction of open jaw, partial jaw and the reverse jaw, thanks to its power of sustained stability and soft, the effect is better. At the same time often with the use of J hook to improve the soft silk were inadequate. Although the MEAW technique has also turned out to be ideal for orthodontic treatment of the above malunion, the cuffing of cuffs often discourages many physicians. Therefore, some physicians changed the use of rocking chair type NiTi arch wire similar to the mechanical system with the vertical traction of the anterior teeth. Despite the fact that this also has the similar effect, it is always felt that each independent tooth moves less than the MEAW technique when compared with the MEAW technique. The rocking chair type NiTi wire is a continuous arch wire, and there is no way to end it. Therefore, the angle between the bracket and the curvature of the arch of the arch wire determines the angle of each tooth, unlike the individual adjustment of the angle of each tooth in the MEAW technique. LH nickel-titanium bending on the use of rocking chairs, and then use the arch wire bending in the mouth after bending or bending before. The effect is quite satisfactory.
