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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

From: Influence of design of dentist’s chairs on body posture for dentists with different working 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