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Table 1 Cephalometric measurements (8) abbreviations and definitions used in the study. Four linear and 4 angular measurements

From: One versus two anterior miniscrews for correcting upper incisor overbite and angulation: a retrospective comparative study

Cephalometric
measurement
Abbreviation Definition
1 Mandibular plane angle (°)
(Steiner)
MP Angular measurement. Angle formed by the intersection of Mandibular plane (Go-Gn) and SN.
Norm 32° ± 4°
2 Overbite (mm) OB Linear measurement. Distance in millimeters between upper and lower incisal edges perpendicular to the occlusal plane.
Norm 2 mm
3 Lower incisor inclination (°)
(Tweed)
IMPA Angular measurement. Angle formed by the intersection of lower incisor (L1) and mandibular plane (Me-Go).
Norm 90° ± 2.5°
4 Upper incisor inclination (°)
(Burstone)
U1-PP Angular measurement. Angle formed by the intersection of upper incisor (U1) and palatine plane (ANS-PNS).
Norm 112°–117°
5 Upper Incisor
Length (mm)
U1L Linear measurement. Distance in millimeters between the upper incisor incisal edge and root apex.
No norm
6 Upper incisor position 1 (mm) CR-SN Linear measurement. Perpendicular distance in millimeters between the upper incisor center of resistance and SN.
No norm
7 Upper incisor position 2 (mm) IE-SN Linear measurement. Perpendicular distance in millimeters between the upper incisal edge and SN.
No norm
8 Interincisal angle (°) U1-L1 Angular measurement. Angle formed by the intersection of upper incisor (U1) and lower incisor (L1).
Norm 130°
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