The rocking chair type nickel-titanium arch wire is formed by special shaping treatment to form an anti-Spiral arc, which can lower the anterior teeth to open the occlusal (occlusal)
The force value is related to the formed Spiral curvature and the diameter of the archwire because its shape is like a rocking chair called a rocking chair archwire.
Mainly divided into round wire and square wire:
Round wire / ROUND ARCHWIRES
The elasticity is better, and the friction between the bracket and the bracket is small, which is beneficial to the movement of the teeth,
so it is often used for correcting the initial stage and aligning the dentition.
Sqaure wire / RECTANGULAR ARCHWIRES
The square arch wire interacts with the bracket gap to help control the direction of movement of the teeth,
so the square arch wire is often used in the middle and later stages of the treatment.