Knosp H
Dtsch Zahnarztl Z. 1977 May;32(5):373-7.
An orthodontic wire for Crozat appliance meets special requirements. A high value for the yield strength is necessary as well as a remarkable plastic strain. In order to bent a spring over a considerable distance with a small stress resulting a low modulus of elasticity will be advantageous. Besides this properties a special wire developed on the basis of precious metals may be repeatedly softened and hardened by a simple method of heat treatment. Research was done about the forces transmitted from the body wire of a Crozat appliance to the opposite molars. For the case of a simplified lower body wire a formula was derived which allows to calculate the applied force.
用于克罗扎特矫治器的正畸钢丝有特殊要求。屈服强度需要有较高值，同时要有显著的塑性应变。为了在小应力下将弹簧弯曲相当长的距离，低弹性模量会很有利。除了这些特性外，一种基于贵金属开发的特殊钢丝可以通过简单的热处理方法反复软化和硬化。对从克罗扎特矫治器的体钢丝传递到对侧磨牙的力进行了研究。对于简化的下体钢丝情况，推导出了一个公式，该公式可用于计算施加的力。
