Attachments play a key role in achieving translation during canine retraction by modifying how forces are delivered to the tooth. By increasing the surface area and altering the geometry of the crown, optimally designed attachments (often vertical or optimized root-control shapes) allow the aligner to engage the tooth more effectively and apply a force system that includes both a distal force and a counter-moment. This shifts the effective line of action closer to the center of resistance and helps prevent uncontrolled distal crown tipping. In essence, attachments turn a mostly displacement-driven system into one that can better approximate the higher moment-to-force ratio needed for bodily movement of the canine into the extraction space.