Analysis of Super Elastic Alloys and Shape-Memory Alloys

Titanium materials possess mechanical properties such as corrosion resistance and heat resistance, and are widely used, including in the medical field, as they have excellent biocompatibility. Research and development of low-toxicity titanium alloys is underway. Orthodontic wire with a super elastic property is used in treatment of dental malocclusions. Orthodontic wires with different transformation points are used appropriately depending on the patient’s paradental condition and sensitivity to pain.
In this study, three types of orthodontic wires with different transformation points were analyzed. As a result, the differences in the concentrations of additional trace elements and differences in the distribution of Ni and other elements were obtained, and the existence of multiple compound phases was confirmed.