Ti-6Al-4 V alloy has proved to be a good alternative to cpTi [19].
Serra et al. observed reduction in the fracture incidence because
Ti-6Al-4 V alloy has higher mechanical properties than cpTi. On the
other hand, the authors did not found improvements in the failure
incidence related to the mobility of the mini-implants, because the
use of the alloy may increase the metallic ion release to human body,
due to the low corrosion resistance of Ti-6Al-4 V alloy in body fluids
[20,21].