Treatment Predictability of Two Clear Aligner Systems: A Retrospective Assessment of Invisalign Versus Eon Aligner

: Both clear aligner therapy systems were able to achieve satisfactory outcomes in terms of inter-premolar and intercanine width changes. Eon Aligner, on the other hand, outperformed Invisalign in terms of rotational accuracy and horizontal movement precision. Notably, both systems demonstrated poor predictability for vertical movements and suffer from significant systemic bias requiring over-correction.