For perfect fine tuning
The retraction and torque archwire (according to Prof. Dr. Franz Günter Sander) is used for the physical retraction of the anterior teeth and for the fine-tuning of the torque in the anterior teeth area. A pre-torqued super-elastic rectangular wire for the anterior segment is crimp-connected to a rectangular steel wire in the posterior area. The ends of the stainless steel segments act as retraction arms at the same time. These retraction arms are shaped, according to clinical requirements, to form tiny individual hooks to which super-elastic springs are attached. This subjects the dental arch to constant forces resulting in a retraction of approx 1.5 mm per month.