In vitro assessment of shape memory effect and pseudoelastic response of smarter alloy shape memory alloy orthodontic archwire

随着加拿大人继续重视他们的口腔健康，这方面的研究变得越来越重要。一个关键的领域是正畸治疗。在使用牙套的正畸治疗中，** 弓丝是通过附着在牙齿上的托槽将载荷传递到牙齿的关键元件。因此，研究弓丝的生物力学对于理解在整个治疗过程中施加的载荷如何影响牙齿移动至关重要。智能合金公司已经开发出一种方法，通过这种方法他们可以改变镍钛基形状记忆合金（SMA）弓丝的局部材料特性。这使得临床医生可以选择弓丝周围的可变刚度，从而促进某些区域的牙齿移动，同时防止其他区域的牙齿移动。阿尔伯塔 ** 大学的正畸生物力学测试和开发小组有一套实验模拟设备来研究 ** 正畸矫治器的生物力学。它们可以用于研究单个托槽和 ** 弓丝之间的旋转力学，托槽和弓丝之间相对滑动时的摩擦力，以及弓周围载荷的传播。这些设备将用于测量使用Smarter Alloys技术加工的弓丝以及传统SMA弓丝产生的载荷。实验结果将阐明SMA弓丝的加工如何影响它们与托槽的相互作用，以及这些加工过的弓丝与正畸治疗中通常使用的弓丝的比较。这项工作将为 **Smarter Alloys提供有价值的信息，以改进其产品，并为整个正畸生物力学研究做出重大贡献。

As Canadians continue to place added significance on their oral health, research in this area has become**increasingly important. One key area of interest is orthodontic treatment. In orthodontic treatment using braces,**the archwire is the key element that delivers loads to teeth through brackets which are attached to the tooth. As**such, research into the biomechanics of archwires is imperative in the understanding of how applied loads**effect tooth movement throughout treatment. Smarter Alloys Inc. has developed a process by which they alter**the local material characteristics of nickel-titanium based shape memory alloy (SMA) archwires. This allows**clinicians the option of variable stiffness around an archwire, thereby facilitating tooth movement in certain**regions while preventing it in others. The Orthodontic Biomechanics Testing and Development Group at the**University of Alberta has a suite of experimental simulation equipment to study the biomechanics of**orthodontic appliances. They allow for the study of rotational mechanics between a single bracket and**archwire, the friction between a bracket and archwire as they slide relative to one another, and the propagation**of loads around the arch. These pieces of equipment will be utilized to measure the loads generated by**processed archwires using Smarter Alloys techniques as well as conventional SMA archwires. Experimental**findings will elucidate how processing of SMA archwires influences their interactions with brackets and how**these processed archwires compare to those typically used in orthodontic treatment. This work will provide**Smarter Alloys with valuable information allowing for the improvement of their product as well as**significantly contribute to the study of orthodontic biomechanics on the whole.