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，这一领域的研究变得越来越重要。人们感兴趣的一个关键领域是正畸治疗。在使用托槽的正畸治疗中，**弓丝是通过固定在牙齿上的托槽向牙齿传递载荷的关键部件。因此，研究弓丝的生物力学对于理解外加载荷在整个治疗过程中如何影响牙齿移动是非常必要的。SMARTER合金公司开发了一种工艺，通过这种工艺可以改变镍钛形状记忆合金(SMA)弓丝的局部材料特性。这使得**临床医生可以选择在弓丝周围改变硬度，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。艾伯塔大学的正畸生物力学测试和开发小组拥有一套实验模拟设备，用于研究**正畸器械的生物力学。它们允许研究单个托槽和**弓丝之间的旋转力学，托槽和弓丝之间相对滑动时的摩擦，以及荷载在拱形周围的传播**。这些设备将被用来测量**使用Smarter合金技术和传统的SMA拱丝加工的拱丝产生的载荷。实验结果将阐明SMA弓丝的处理如何影响它们与托槽的相互作用，以及这些处理后的弓丝与通常用于正畸治疗的弓丝有何**比较。这项工作将为**更聪明的合金提供有价值的信息，从而改进他们的产品，并**对正畸生物力学的整体研究做出重大贡献。

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.