TABLE 2.
Quantitative measures collected from lateral cephalographs
| Trait name | Definition |
|---|---|
| Ar–Go | Linear distance between Ar and Go |
| Ba–Ar | Linear distance between Ba and Ar |
| Ba–N | Linear distance between Ba and N |
| Ba–PNS | Linear distance between Ba and PNS |
| Ba–Pr | Linear distance between Ba and Pr |
| Ba–S | Linear distance between Ba and S |
| Facial axis | Angular measure between Ba–N plane and the line from foramen rotundum to Gn |
| Facial taper | Angular measure between mandibular plane (Go–Me) and N–Pog plane |
| Facial depth | Angular measure between Frankfort horizontal and facial plane |
| Go–Me | Linear distance between Go and Me |
| Go–Gn–SN | Angular measure between Go–Gn plane and S–N plane |
| Gonial angle | Angular measure from Ar to Go to Me |
| Interincisal angle | Angular measure between axis of upper and lower central incisors |
| N–PNS | Linear distance between N and PNS |
| N–Pr | Linear distance between N and Pr |
| N–S–Ba | Angular measure from N to S to Ba |
| N–S–PNS | Angular measure from N to S to PNS |
| Neuropc1 | Neurocranial principal component 1 score |
| Neuropc2 | Neurocranial principal component 2 score |
| Neuropc3 | Neurocranial principal component 3 score |
| Occ–S | Angular measure between occlusal plane and S–N plane |
| PNS–Pr | Linear distance between PNS and Pr |
| Posterior condylion | Linear distance between S and PCd |
| Posterior facial height | Linear distance from Go to CF |
| PrNId | Angular measure from Pr to N to Id |
| S–N–Pr | Angular measure from S to N to Pr |
| S–N | Linear distance between S and N |
| S–PNS | Linear distance between S and PNS |
| S–Pr | Linear distance between S and Pr |
| S–X60 | Linear distance between S and X60 |
| S–X70 | Linear distance between S and X70 |
| S–X80 | Linear distance between S and X80 |
| S–X90 | Linear distance between S and X90 |
| S–X100 | Linear distance between S and X100 |
| S–X110 | Linear distance between S and X110 |
| S–X120 | Linear distance between S and X120 |
| S–X130 | Linear distance between S and X130 |
| S–X140 | Linear distance between S and X140 |
| S–X150 | Linear distance between S and X150 |
| S–X160 | Linear distance between S and X160 |
| S–X180 | Linear distance between S and X180 |
| SND | Angular measure from S to N to D |
| SNId | Angular measure from S to N to Id |