Small Detail, Big Difference You’ve checked the setup three times. The staging looks beautiful, the forces align perfectly, and you send the case off with confidence. Two months later, the canine looks like it’s rebelling. The aligner fits, but the root clearly didn’t get the memo. We’ve all been there. What behaves perfectly on screen rarely acts the same in the mouth. That’s usually when a voice in the back of our head mutters, “Maybe we need a power arm.” What a power arm