KPG Index versus OPG Measurements: A Comparison between 3D and 2D Methods in Predicting Treatment Duration and Difficulty Level for Patients with Impacted Maxillary Canines

Figure 1

Mesiodistal position (𝑥) for both cusp and root tips; panorex view. In this example 𝐶_𝑥=2 and 𝑅_𝑥=1.