Table 2 Principal components generated based in a ten axes model.
Principal component | PC 1 | PC 2 | PC 3 | PC 4 | PC 5 | PC 6 | PC 7 | PC 8 | PC 9 | PC 10 |
|---|---|---|---|---|---|---|---|---|---|---|
% of explained variance | 26.6 | 19.6 | 12.3 | 8.2 | 6.8 | 5.4 | 5.0 | 3.7 | 2.9 | 2.2 |
Cumulated % of explained variance | 26.6 | 46.2 | 58.5 | 66.8 | 73.6 | 79.0 | 84.1 | 87.8 | 90.7 | 92.9 |
Cephalometric variablesa | Anterior cranial base (SN) (mm) | SN-GoGn (°) | FH-SN (°) | ANB (°) | Occ plane to FH (°) | Cranio-Mx base/SN-palatal plane (°) | Upper Gonial angle (Ar-Go-Na) (°) | Wits (FOP) (mm) | SN/GoMe (%) | Posterior cranial base (S-Ar) (mm) |
Anterior face height (NMe) (mm) | Facial axis-Ricketts (NBa-PtGn) (°) | SNA (°) | N-A-Pg (°) | Facial angle (FH-NPg) (°) | UFH (N-ANS/(N-ANS + ANS-Me)) (%) | Articular Angle (°) | Wits Appraisal (mm) | ANS-PNS/Me-Go (%) | S-Ar/Ar-Go (%) | |
Upper face height (N-ANS) (mm) | FMA (MP-FH) (°) | SNB (°) | Convexity (A-NPg) (mm) | Maxillary skeletal (A-N Perp) (mm) | LFH/TFH (ANS-Me:N-Me) (%) | Rp-FH (°) | ||||
Lower face height (ANS-Me) (mm) | Lower face height (ANS-Xi-Pm)(°) | SND (°) | Pg-NB (mm) | Mand. skeletal (Pg-Na Perp) (mm) | Face Ht ratio (N-ANS/ANS-Me) (%) | |||||
Posterior Face Height (SGo) (mm) | Facial Taper (°) | Y-axis (SGn-SN) (°) | ||||||||
Ramus height (Ar-Go) (mm) | Gonial/jaw angle (Ar-Go-Me) (°) | Occ plane to SN (°) | ||||||||
Co-Go (mm) | Lower gonial angle (N-Go-Me) (°) | Saddle/sella angle (SN-Ar) (°) | ||||||||
Midface length (Co-A) (mm) | Basal width (mm) | Superior angle SN-AB (°) | ||||||||
Ar-A (mm) | P-A Face height (S-Go/N-Me) (%) | |||||||||
Maxillary length (ANS-PNS) (mm) | PFH:AFH (%) | |||||||||
Mandibular body length (Go-Gn) (mm) | ||||||||||
Length of mand base (Go-Pg) (mm) | ||||||||||
Mandibular length (Co-Gn) (mm) | ||||||||||
Co-B1 Total mand (mm) | ||||||||||
Ar-Gn (mm) | ||||||||||
Mx/Md diff (Co-Gn-Co-A) (mm) |
