Waters N E
Department of Dental Materials Science, UMDS, London.
Br J Orthod. 1992 Nov;19(4):319-22. doi: 10.1179/bjo.19.4.319.
Superelastic nickel-titanium archwires, unlike conventional wires, are capable of withstanding very large deflections and on returning to their original shape on deactivation will produce more moderate forces. The region over which there is a 'plateau' depends on the deflection and is greater the larger the deflection. With most wires both the initial wire stiffness in bending and the 'plateau' deactivation loads are very dependent on temperature. Wire size is no longer a guide to wire behaviour and force values for a given temperature and for wires of the same nominal diameter from different manufacturers can vary by a factor of six.
与传统弓丝不同，超弹性镍钛弓丝能够承受非常大的挠曲，并且在去激活后恢复到其原始形状时会产生更适度的力。存在“平台期”的区域取决于挠曲程度，挠曲越大该区域越大。对于大多数弓丝而言，其初始弯曲刚度和“平台期”去激活载荷都非常依赖于温度。弓丝尺寸不再是弓丝性能的指标，对于给定温度以及来自不同制造商的具有相同标称直径的弓丝，其力值可能相差六倍。
