Dental Which index is used to score the outcome of treatment in patients with cleft lip and palate? A Index of Orthodontic Treatment Complexity (IOTC) B Summer’s Index C Index of Complexity Outcome and Need (ICON) D Goslon Yardstick 💡 Explanation Which index is used to score the outcome of treatment in patients with cleft lip and palate? ✓ Correct Answer: D. Goslon Yardstick