Skip to main content

Table 4 Working sitting posture. Presentation of median, minimum and maximum of all measurement parameters for all test persons and for each of the three groups isolated. Chair 1: Sirona CARL (Sib), Chair 2: Salli Saddle chair (Sal), Chair 3: Sirona Hugo Freehand (Sio), Chair 4: Aeris Swopper (Sw), Chair 5: KaVo Physioform 5005 (Kg), Chair 6: KaVo Evo (Kb)

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

Working posture Chair 1 Sib Chair 2 Sal Chair 3 Sio Chair 4 Sw Chair 5 kg Chair 6 Kb
  Group Median Minimum/
Maximum
Median Minimum/
Maximum
Median Minimum/
Maximum
Median Minimum/
Maximum
Median Minimum/
Maximum
Median Minimum/
Maximum
Spine parameter
Trunk length D (mm) ARDL All groups 493.64 472.64/
521.86
489.99 473.96/
515.21
491.44 472.31/
519.09
494.18 471.62/
515.24
494.10 475.66/
516.83
496.18 477.57/
522.61
  1 500.69 479.53/
531.92
500.34 479.81/
527.88
493.42 476.57/
534.37
503.29 472.27/
533.11
497.45 480.71/
537.84
499.30 481.10/
529.98
  2 498.92 474.13/
525.75
494.09 474.22/
516.34
500.35 474.57/
523.64
495.18 473.98/
526.25
499.26 481.09/
525.27
505.04 483.02/
527.36
  3 484.99 466.38/
497.62
484.53 463.13/
498.67
481.98 461.52/
500.07
475.48 460.72/
498.96
485.25 467.22/
501.82
484.23 471.88/
505.21
Trunk length S (mm) ARLS All groups 534.98 520.59/
564.10
534.17 517.75/
556.54
534.16 518.28/
559.85
534.87 516.31/
556.82
539.96 522.18/
564.72
540.70 523.20/
566.72
  1 534.39 527.93/
576.00
538.21 523.79/
569.62
533.36 525.28/
563.23
534.47 528.41/
561.17
536.02 526.77/
571.83
537.43 530.87/
580.78
  2 550.24 526.57/
570.71
542.72 522.07/
567.11
545.09 524.71/
568.74
547.78 523.18/
572.96
552.60 529.14/
570.18
559.31 537.20/
568.99
  3 523.20 507.16/
536.38
520.63 507.70/
537.21
523.02 510.03/
537.85
522.89 498.68/
540.82
526.74 514.09/
541.24
526.02 514.85/
543.45
Sagittal trunk decline (°) ASRN All groups −16.37 −18.33/
−13.69
−15.28 −17.40/
−12.66
−16.25 −18.05/
−13.32
−16.10 −18.87/
−13.23
−16.80 − 19.51/
− 15.17
− 16.67 − 19.72/
− 14.82
  1 − 14.57 − 18.06/
− 12.65
− 15.37 − 18.55/
− 11.82
−14.44 − 17.66/
− 11.57
−14.95 − 17.59/
− 12.06
− 16.02 − 19.20/
− 11.30
− 16.56 − 18.83/
− 13.46
  2 −16.70 − 19.78/
− 14.80
− 14.57 − 16.96/
− 13.00
− 16.32 − 17.95/
− 14.6
−16.04 −20.01/
− 14.45
−16.66 − 18.84/
− 15.28
−17.75 −20.70/
− 15.23
  3 − 17.45 − 19.38/
− 14.36
− 16.63 − 17.40/
− 14.25
−16.33 − 18.94/
− 14.17
−17.54 − 20.65/
− 13.82
−18.26 − 20.59/
− 16.01
− 16.11 − 20.27/
− 14.82
Frontal trunk decline (°) AFRN All groups 0.99 −0.27/
1.71
0.66 −0.24/
1.69
0.46 − 0.15/
1.64
0.75 − 0.25/
1.74
1.03 − 0.15/
1.81
0.66 −0.22/
1.91
  1 1.25 0.06/
2.08
0.75 − 0.03/
1.63
0.69 −0.03/
1.60
1.09 −0.22/
1.80
0.66 −0.26/
2.17
0.73 0.14/
1.94
  2 1.11 −0.24/
1.59
0.75 0.16/
1.84
0.45 −0.05/
1.64
0.70 −0.19/
1.64
1.04 0.25/
1.45
0.03 −0.61/
1.74
  3 0.70 −1.40/
1.33
0.51 −0.84/
2.04
0.21 −0.61/
2.09
0.36 −0.74/
1.75
1.29 −1.76/
2.42
0.99 −0.99/
1.83
Axis decline (°) AAA All groups −0.35 −1.86/
0.75
−0.75 −1.87/
0.71
− 0.68 −1.75/
0.85
−0.56 − 1.94/
1.06
− 0.27 −1.56/
0.97
0.01 −1.98/
0.94
  1 0.28 −1.64/
1.72
−0.05 −1.62/
0.88
−0.04 − 1.17/
1.09
0.34 − 1.55/
1.52
0.54 − 1.17/
1.05
0.19 − 1.82/
1.04
  2 −0.26 −1.58/
0.69
− 0.77 −2.22/
0.52
− 0.89 −2.14/
0.70
−0.93 −1.92/
0.52
− 0.24 −1.82/
1.35
−0.19 − 1.84/
1.08
  3 −0.60 − 2.64/
0.48
− 0.80 − 2.78/
0.59
− 1.04 − 2.14/
0.54
− 0.59 − 2.58/
0.38
−1.10 − 1.74/
0.84
−0.21 − 2.34/
0.73
Thoracic bending angle (°) ATBW All groups 23.54 19.15/
27.49
23.44 21.46/
25.96
22.75 20.12/
26.56
23.52 20.41/
27.89
23.62 19.21/
26.88
23.00 19.69/
26.85
  1 22.88 19.35/
27.28
22.80 20.83/
25.07
21.39 19.78/
27.24
22.26 19.82/
23.72
22.59 18.45/
25.80
21.66 19.35/
24.22
  2 21.59 17.84/
25.25
22.83 19.47/
24.31
22.51 19.18/
25.02
23.24 20.46/
25.54
21.67 18.02/
25.38
20.93 18.78/
26.05
  3 26.08 21.51/
30.61
25.92 23.43/
31.69
25.74 20.88/
30.63
26.69 21.20/
31.73
26.88 21.77/
32.70
26.80 22.63/
33.24
Lumbar bending angle (°) ALBW All groups 7.63 4.93/
10.80
7.40 4.77/
9.56
8.00 6.21/
10.50
7.66 5.14/
10.17
7.19 5.43/
10.79
7.25 5.54/
9.28
  1 6.42 4.99/
10.38
6.49 4.46/
9.33
7.79 4.76/
9.21
6.59 3.88/
9.67
6.97 4.92/
10.21
6.98 3.83/
9.07
  2 5.50 4.72/
10.62
6.84 4.10/
11.47
6.81 6.26/
9.30
7.70 5.54/
11.88
6.56 5.82/
10.37
5.89 5.21/
9.22
  3 8.20 6.54/
10.89
8.23 6.22/
9.20
9.44 7.36/
12.86
8.35 6.15/
12.50
9.65 5.80/
12.60
8.15 7.10/
9.68
Standard deviation lateral deviation (mm) ASAS All groups 3.39 2.32/
4.10
3.20 2.14/
4.78
3.20 2.37/
5.11
3.35 2.58/
4.71
4.10 2.18/
5.12
3.51 2.29/
5.02
  1 3.58 2.00/
4.00
2.71 2.29/
4.40
2.87 2.42/
5.56
3.30 2.25/
4.65
3.44 1.98/
5.16
2.72 2.09/
5.14
  2 3.18 2.32/
3.98
3.17 2.07/
5.62
2.83 1.95/
4.61
3.34 2.70/
4.39
3.57 2.20/
4.96
3.43 2.39/
4.95
  3 3.49 2.76/
4.62
4.38 2.00/
5.39
4.02 2.98/
5.46
4.14 2.37/
5.27
4.75 2.48/
5.21
4.19 2.95/
5.02
Maximal lateral deviation (mm) AMSA All groups −3.39 −6.10/
5.00
−3.87 −6.89/
3.16
−2.86 −7.14/
4.52
−1.87 −5.39/
4.71
−3.90 −7.46/
6.01
−2.88 −6.41/
4.86
  1 −3.25 −4.65/
6.11
−3.83 −5.05/
4.24
−2.08 −5.23/
4.95
− 2.46 −4.97/
4.90
− 2.52 − 6.45/
6.12
− 3.20 −4.89/
4.31
  2 −4.15 − 5.82/
4.22
− 2.64 − 7.75/
2.67
− 2.32 − 6.71/
2.77
2.09 − 5.14/
5.47
− 4.30 − 6.80/
6.76
0.59 − 6.02/
5.93
  3 − 5.37 − 6.49/
5.00
− 5.94 − 7.94/
3.31
−5.10 −8.07/
4.85
− 4.72 − 7.07/
4.10
− 6.62 − 7.84/
4.33
− 5.47 − 6.83/
4.73
Standard deviation rotation (°) ASAR All groups 3.28 2.52/
4.27
3.48 2.70/
4.33
3.46 2.26/
5.00
3.21 2.34/
4.81
3.26 2.06/
5.05
3.41 2.56/
4.50
  1 3.24 2.56/
3.90
3.21 2.35/
4.61
3.21 1.98/
3.89
2.96 1.89/
3.76
2.20 1.80/
4.18
3.24 2.06/
4.30
  2 2.85 2.44/
4.34
3.21 2.43/
4.15
3.35 2.59/
4.88
3.74 2.33/
4.97
2.94 2.09/
4.46
3.33 2.15/
4.34
  3 4.02 2.53/
4.75
4.10 3.45/
4.57
4.28 2.26/
6.07
3.65 2.77/
4.84
4.31 3.26/
6.67
4.19 3.16/
5.42
Maximal rotation (°) AMR All groups 4.47 −6.74/
7.52
5.20 −5.82/
10.14
5.44 −3.99/
9.06
4.22 −7.40/
10.32
5.44 −4.14/
9.10
5.35 − 3.76/
9.04
  1 5.17 − 7.72/
6.80
4.16 −5.22/
9.01
4.70 −3.03/
7.43
3.16 −6.51/
8.15
5.64 1.26/
8.21
6.82 −0.48/
8.37
  2 5.17 −5.46/
7.34
3.76 −8.68/
8.71
6.56 3.90/
8.70
4.67 −5.20/
11.32
5.04 −6.83/
8.95
5.14 −5.25/
10.07
  3 4.24 −8.09/
10.77
6.87 −5.29/
13.42
5.44 −7.24/
12.46
4.22 −9.33/
10.23
5.44 −8.22/
12.13
3.29 −8.81/
17.16
Kyphosis angle (°) AKW All groups 57.28 49.61/
61.59
54.08 48.26/
64.04
59.06 48.68/
67.91
55.37 48.10/
64.10
55.87 46.36/
68.15
55.72 47.39/
66.90
  1 52.56 49.52/
58.24
53.78 46.57/
56.95
58.40 48.68/
61.51
52.68 46.78/
57.01
52.46 49.02/
57.13
50.27 46.03/
55.19
  2 49.80 45.77/
56.59
48.93 42.90/
59.12
49.97 46.11/
53.80
49.06 47.37/
54.89
44.00 40.40/
51.14
47.44 43.92/
63.78
  3 65.91 58.48/
75.27
64.81 54.00/
77.89
65.77 59.06/
72.88
65.60 59.92/
76.42
68.43 59.02/
74.67
66.90 56.33/
74.82
Lordosis angle (°) ALW All groups 27.47 20.16/
34.5
24.38 21.20/
36.70
32.27 21.85/
44.79
28.13 20.98/
33.8
26.62 16.68/
41.74
31.33 15.86/
38.29
  1 24.53 19.39/
34.03
21.58 18.26/
30.33
32.06 17.90/
45.87
24.03 16.30/
28.24
21.71 16.05/
32.94
24.49 10.93/
35.50
  2 24.08 18.92/
30.44
24.00 21.97/
31.51
24.47 20.72/
29.22
26.11 16.79/
32.48
24.31 5.30/
40.08
15.32 12.30/
25.87
  3 32.56 24.63/
48.62
36.29 21.38/
53.20
34.92 23.11/
48.20
33.72 29.69/
41.28
39.93 23.72/
46.35
34.99 25.98/
47.00