Abbreviation | Measurement | Definition |
---|---|---|
Translation—linear measurements (mm) | ||
U1 (x) | Sagittal translation (x-axis) | Shortest distance between the midpoint of the upper central incisors on the planned and the achieved maxillary position in sagittal direction |
U1 (y) | Transversal translation (y-axis) | Shortest distance between the midpoint of the upper central incisors on the planned and the achieved maxillary position in transversal direction |
U1 (z) | Vertical translation (z-axis) | Shortest distance between the midpoint of the upper central incisors on the planned and the achieved maxillary position in vertical direction |
Rotation—Angular measurements (°) | ||
OcP (x) | Rotation of the upper occlusal plane around the sagittal (x-) axis | Angular difference between the upper occlusal plane of the planned and the achieved maxillary position projected onto the frontal plane |
OcP (y) | Rotation of the upper occlusal plane around the transversal (y-) axis | Angular difference between the upper occlusal plane of the planned and the achieved maxillary position projected onto the midsagittal plane |
OcP (z) | Rotation of the upper occlusal plane around the vertical (z-) axis | Angular difference between the maxillary sagittal plane of the planned and the achieved maxillary position projected onto the Frankfurt Horizontal plane |