The effect of orthodontic clinical use on the mechanical characteristics of nickel-titanium closed-coil springs.
Haixia GengHongli SuJohn WhitleyFeng-Chang LinXin XuChing-Chang KoPublished in: The Journal of international medical research (2019)
The loss of MF and the lowering of the MDF was not time dependent. Heat treating can partially recover the mechanical properties of the used springs.