[Retracted] Comparison of Movement of the Upper Dentition According to Anchorage Method: Orthodontic Mini-Implant versus Conventional Anchorage Reinforcement in Class I Malocclusion

Figure 3

Anchorage variables. (a) (1) U1 to PP (°); (2) U6 to PP (°), (b) (3) U1E-sag: shortest distance from U1E to the vertical reference line (mm); (4) U1A-sag: shortest distance from U1A to the vertical reference line (mm); (5) U6M-sag: shortest distance from U6M to the vertical reference line (mm); (6) U6A-sag: shortest distance from U6A to the vertical reference line (mm); (c) (7) U1E-ver: shortest distance from U1E to the horizontal reference line (mm); (8) U1A-ver: shortest distance from U1A to horizontal reference line (mm); (9) U6C-ver: shortest distance from U6C to horizontal reference line (mm); (10) U6F-ver: shortest distance from U6F to horizontal reference line (mm). U1 means the long axis of the upper incisor through upper incisor edge (U1E) and root apex of the upper incisor (U1A); PP: palatal plane, horizontal reference line; U6: long axis of the upper first molar through center of the upper first molar crown on the occlusal surface (U6C) and furcation of the upper first molar (U6F); PTV: vertical reference line through the Pt point (tangent to the horizontal reference line, palatal plane); U6M: most mesial point of the mesial surface of the upper first molar crown; U6A: mesiobuccal root apex of the upper first molar.