TITANIUM BASED VARIABLE MODULUS ORTHODONTIC WIRE

一个理想的正畸丝应该表现出生物相容性，蠕变 电阻、可焊性、可成形性，以及通过适当的处理， 可变弹性模量或弯曲刚度。 新钛基形状 记忆效应合金显示出接近这种理想的前景。 基于 钛钼铝和钛钒合金的初步研究 铝合金，已经表明，弹性模量范围从2.5 到9 × 106psi，360%的变化，可以在这些系统中实现。 他们的 基于钛合金的性能， 整形外科，以及它们的形状记忆效应和超弹性组合 行为，使进一步的研究，以表征性能的情况下， 这两种三元合金。 由于不含镍， 可以避免在对该元素敏感的人中观察到的反应。 为了使这些合金商业化，需要进一步研究 正畸应用和合金成分所需的性能 并且需要热处理。 还必须制定处理程序 用于电线生产。 预计这些合金将提供显著的 在广泛的正畸程序的进步，此外，可以 为普通骨科提供有价值的新材料。

An ideal orthodontic wire should exhibit bio-compatibility, creep resistance, weldability, formability and also, by suitable treatment, a variable elastic modulus or flexural stiffness. New titanium based shape memory effect alloys show promise of being close to this ideal. Based on preliminary studies of Titanium-Molybdenum-Aluminum and Titanium-Vanadium- Aluminum alloys, it has been shown that an elastic modulus range from 2.5 to 9 x 106psi, a 360% variation, can be achieved in these systems. Their assured bio-compatibility, based on the performance of titanium alloys in orthopedics, and their combination of shape memory effect and super-elastic behavior, makes a case for further research to characterize the properties of these two ternary alloys. Being Nickel free any of the adverse tissue reactions observed in people sensitive to this element would be avoided. To commercialize these alloys, further research on the relationship between the properties required for orthodontic application and alloy composition and heat treatment is needed. Processing procedures must also be developed for wire production. These alloys are expected to provide a significant advance in a wide range of orthodontic procedures, and in addition could be valuable new materials for general orthopedics.