No abstract

Springs should be mechanically stabilized before their application. The degree of force degradation over time is insignificant for mechanically stabilized springs. Degradation or regeneration of force over time, mechanical stabilization or micromovements in the mouth don't cause any transition between individual stress-strain curve phases.

In this in vitro study, we tested 10 types of springs from 5 manufacturers. We performed a simulation of the clinically relevant action of the spring during its application and treatment of the patient. For determining the deactivation plateau, we developed an innovative statistical method, making it feasible to precisely find and evaluate the necessary clinically relevant parameters of all types of NiTi SE closed-coil springs in the market. In terms of the application simplicity, the 3M 12 and 3M 9 springs proved to be the most suitable.