Table 5 Group comparison in habitual posture and dental working posture for each chair. Detailed presentation of the Bonferroni-Holm corrected p-values of the pair comparison (Wilcoxon-Matched-Pairs test) after significant p-values of the Kruskal-Wallis test. Group 1: No dental education, group 2: students of dentistry / dentists < 10 years professional experience, group 3: dentists ≥10 years professional experience
Group comparison | Habitual sitting posture | Working posture | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chair | 1 Sib | P-value | 2 Sal | P-value | 3 Sio | P-value | 4 Sw | P-value | 5 Kg | P-value | 6 Kb | P-value | 1 Sib | P-value | 2 Sal | P-value | 3 Sio | P-value | 4 Sw | P-value | 5 Kg | P-value | 6 Kb | P-value |
Spine parameter | ||||||||||||||||||||||||
Trunk length D (mm) RLD | – | – | – | – | – | – | – | – | – | – | – | – | 1vs3 | 0.05 | – | – | – | – | – | – | – | – | – | – |
Trunk length S (mm) RLS | 1vs3 2vs3 | 0.03 0.02 | 1vs3 2vs3 | 0.03 0.03 | 1vs3 2vs3 | 0.03 0.03 | 1vs3 2vs3 | 0.03 0.02 | 1vs3 2vs3 | 0.04 0.03 | 1vs3 2vs3 | 0.03 0.03 | 1vs3 2vs3 | 0.02 0.01 | 1vs3 2vs3 | 0.03 0.03 | 1vs3 2vs3 | 0.04 0.02 | 1vs3 2vs3 | 0.03 0.01 | 1vs3 2vs3 | 0.05 0.03 | 2vs3 | 0.01 |
Frontal trunk decline (°) FRN | 1vs3 | 0.01 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Thoracic bending angle (°) TBW | – | – | – | – | – | – | – | – | 1vs3 2vs3 | 0.03 0.05 | 1vs3 2vs3 | 0.03 0.03 | 2vs3 | 0.05 | 2vs3 | 0.03 | – | – | 1vs3 | 0.04 | – | – | 1vs3 2vs3 | 0.04 0.04 |
Lumbar bending angle (°) LBW | – | – | 1vs3 2vs3 | 0.002 0.02 | 1vs3 | 0.02 | 1vs3 2vs3 | 0.02 0.03 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Standard deviation rotation (°) SAR | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1vs3 2vs3 | 0.001 0.01 | – | – |
Kyphosis angle (°) KW | – | – | – | – | 1vs3 | 0.001 | 1vs2 1vs3 2vs3 | 0.03 0.001 0.05 | 1vs3 | 0.03 | – | – | 1vs3 2vs3 | 0.01 0.01 | 1vs3 2vs3 | 0.01 0.01 | – | – | 1vs3 2vs3 | 0.01 0.01 | 1vs3 2vs3 | 0.03 0.01 | 1vs3 | 0.03 |
Lordosis angle (°) LW | – | – | 1vs3 | 0.05 | 1vs3 | 0.03 | 1vs3 2vs3 | 0.001 0.04 | – | – | – | – | – | – | – | – | – | – | 1vs3 | 0.02 | – | – | – | – |
Shoulder parameter | ||||||||||||||||||||||||
Scapular height (°) SBS | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1vs2 | 0.02 | – | – | – | – |
Scapular angle left (°) SWL | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1vs3 2vs3 | 0.02 0.02 | – | – | – | – | – | – |
Scapular angle right (°) SWR | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1vs3 | 0.02 | – | – | – | – | – | – |
Pelvis parameter | ||||||||||||||||||||||||
Pelvis torsion (°) BT | – | – | – | – | – | – | – | – | – | – | 1vs3 2vs3 | 0.05 0.05 | – | – | – | – | – | – | – | – | – | – | – | – |
Pelvis rotation (°) BR | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2vs3 | 0.03 | – | – |