Figure 2.

(A) SEM, 25× magnification of side view of the passive SL system Damon 3** of the maxillary left canine is shown with a polycarbonate upper 1/2, and a metal slot-clip assembly in the lower one-half. In this side view, there is no clip curvature to seat archwires toward the base of the slot making it passive. (B) Light, stereomicroscopy is used to examine the Frontal-¾ perspective of the passive metal clip in the open position demonstrating the metal slot-clip assembly is inserted into the polycarbonate material in the open position