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Table 3 Lateral radiograph measurements

From: Morphological characteristics influencing the orthodontic extraction strategies for Angle's class II division 1 malocclusions

Number Measurement Definition
1 SNA° Angle formed by the intersection of NS and NA lines
2 SNB° Angle formed by the intersection of NS and NB lines
3 ANB° Angle formed by the intersection of NA and NB lines
4 NBa-PtGn° Posteroinferior angle formed by the intersection of NBa and PtGn lines
5 ANS-Xi-Pm° Angle formed by the intersection of Xi-ANS and Xi-Pm lines
6 MP-SN° Anteroinferior angle formed by the intersection of MP and SN planes
7 DC-Xi-Pm° Anterosuperior angle formed by the intersection of Xi-DC and Xi-Pm lines
8 L1-APog Distance from point L1 to line APog
9 A-NPog Distance from point A to line NPog
10 P6U-PTV Perpendicular distance between point P6U and line perpendicular to Frankfurt plane (Po-Or plane), tangent to Pt
11 U1-NPog Distance from point U1 to line NPog
12 L1-NPog Distance from point L1 to line NPog
13 Ls-Ns Pog' Distance from point Ls to line NsPog'
14 Li-Ns Pog' Distance from point Li to line NsPog'