Table III.
Abbreviations of cephalometric variables used for meta-analysis.
| A, Angular measurements | |
|---|---|
| Variable | Description |
| SNA | Angle between lines S-N and N-A |
| SNB | Angle between lines S-N and N-B |
| ANB | Angle between lines NA and NB |
| SN.GoGn | Angle between lines SN and Steiner's mandibular plane (line from Go to Gn) |
| FMA | Frankfort's mandibular plane angle. Angle between Frankfort's horizontal plane and Downs mandibular plane |
| (line from Me to Go) | |
| SN.MP | Angle between SN and Downs MP |
| NSGn | Angle between SN and Y axis (line from S to Gn) |
| SN.PP | Angle between SN and palatal plane (line from ANS to posterior nasal spine) |
| SN.OP | Angle between SN and occlusal plane |
| MP.PP | Angle between MP and palatal plane |
| ArGoMe | Gonial angle of mandible (angle from the Ar to Go to Me) |
| B, Linear measurements | |
| Variable | Description |
| N-Me | Total anterior facial height. Linear distance between N and Me |
| ANS-Me | Lower anterior facial height. Linear distance between ANS and Me |
| Ar-Go | Linear distance between Ar and Go |
| S-Go | Linear distance between S and Go |
S, sella; N, nasion, A, N-point A; B, N-point B; Go, gonion; Gn, gnathion; Me, menton; ANS, anterior nasal spine; Ar, articulare; MP, mandibular plane.