They apply a continuous and individualized action of torque on anterior teeth.
The spring slides over the arch, being placed on both sides of the incisor to be twisted
The placement of the arch inside the bracket activates the spring and exerts a single contact with the tooth surface
Each size is designed for a specific wire dimension and does not support other gauges or round wires
The high resilience of this wire does not allow its adjustment or attachment to other arcs than indicated, otherwise the springs will break