A clinical trial to evaluate the effects of prophylactic fluoride agents on the superelastic properties of nickel-titanium wires.

Aim: To study the effects of a prophylactic fluoride regimen on the mechanical properties of nickel-titanium (Ni-Ti) archwires under clinical conditions.

Method: The unloading properties of 100 Ni-Ti wires were tested using a three-point bending test at five deflections (0.5 mm, 1.