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Table 1 Comparison of results of the cephalometric analysis of skeletal, dento-alveolar and soft tissue factors of the Polish study material compared to the control group (Björk)

From: The Polish face in profile: a cephalometric baseline study

  Cephalometric table   mean SD/Range Polish average Polish SD T value sign
  Björk N = 320 N = 122   
  Sagittal jaw relationship        
1 A-N-pg A-N-pg 2.0° 2.5° 1.31° 2.86° 1.093 n.s.
2 A-N-B A-N-B 3.0° 2.5° 2.56° 2.44° 0.733 n.s.
  Jaw prognathism        
3 Maxillary (A) S-N-A 82.0° 3.5° 81.72° 3.69° 0.385 n.s.
4 Mandibular (pg) S-N-pg 80.0° 3.5° 80.42° 4.00° 0.562 n.s.
5 Mandibular (B) S-N-B 79.0° 3.0° 79.16° 3.80° 0.224 n.s.
  Dento-alveolar prognathism        
6 Maxillary pr-N-A 2.0° 1.0° 2.11° 1.03° 0.285 n.s.
7 Mandibular (CL) CL/ML 70.0° 6.0° 70.88° 6.25° 0.927 n.s.
8 Mandibular (B) pg-N-B 1.0° 2.5° 1.25° 0.88° 0.534 n.s.
  Incisor inclination/base        
9 Maxillary Ils/NL 110.0° 6.0° 112.10° 7.13° 2.120 *
10 Mandibular Ili/ML 94.0° 7.0° 94.00° 7.25° 0.000 n.s.
  Vertical relationship        
11 Vertical jaw relationship NL/ML 25.0° 6.0° 21.18° 5.81° 4.116 ***
12 Maxillary inclination NL/NSL 8.0° 3.0° 8.88° 2.92° 1.339 n.s.
13 Mandibular inclination ML/NSL 33.0° 6.0° 30.05° 6.08° 3.134 **
  Vertical dento-alveolar condition        
14 Maxillary zone NL/OLs 10.0° 4.0° 7.17° 3.92° 3.721 ***
15 Mandibular zone OLi/ML 20.0° 5.0° 18.13° 3.76° 2.375 **
  Mandibular morphology        
16 Beta angle   19.0° 2.5° 22.13° 2.94° 4.913 ***
17 Jaw angle   126.0° 6.0° 121.64° 6.70° 4.492 ***
  Cranial base        
18 N-S-ar   124.0° 5.0° 123.67° 5.74° 0.369 n.s.
19 N-S-ba   131.0° 4.5° 130.85° 5.23° 0.176 n.s.
  1. *p < 0.05.
  2. **p < 0.01.
  3. ***p < 0.001.