Journal of Dental Rehabilitation and Applied Science:eISSN 2384-4272 pISSN 2384-4353

Table. 2.

Comparison of bite forces and contact area difference during mandibular movement

Variables Pre-treatment Post-treatment differ Pa Z Pd
Mean ± SD Mean ± SD
Biting Average bite force (kgf) Treat. 14.61 ± 13.58 9.30 ± 8.35 -5.32 ± 10.50 0.123 -1.817c 0.069
Cont. 11.03 ± 11.80 11.56 ± 7.78 0.53 ± 10.58 -0.140b 0.889
maximum bite force (kgf) Treat. 5.35 ± 7.24 3.36 ± 3.00 -1.99 ± 7.18 0.252 -1.131c 0.258
Cont. 3.86 ± 3.44 4.04 ± 3.11 0.19 ± 3.76 -0.534b 0.594
maximum contact area (n) Treat. 10.13 ± 6.21 7.67 ± 5.45 -2.47 ± 6.12 0.2234 -1.415c 0.157
Cont. 8.36 ± 7.25 8.86 ± 4.79 0.50 ± 5.23 -0.252b 0.801
Lateral movement Average bite force (kgf) Treat. 10.10 ± 7.52 7.27 ± 3.98 -2.83 ± 5.70 0.006* -1.790b 0.073
Cont. 13.24 ± 24.53 17.70 ± 26.71 4.46 ± 6.94 -2.072b 0.038*
maximum bite force (kgf) Treat. 6.59 ± 4.28 4.80 ± 2.58 -1.79 ± 3.90 0.003* -1.903b 0.057
Cont. 5.83 ± 7.49 8.06 ± 7.47 2.23 ± 3.06 -2.292b 0.022*
maximum contact area (n) Treat. 6.00 ± 2.10 5.47 ± 2.13 -0.53 ± 1.85 0.217 -1.056b 0.291
Cont. 5.17 ± 4.22 6.73 ± 5.00 1.57 ± 4.80 -0.987b 0.324
Anterior and posterior movement Average bite force (kgf) Treat. 13.51 ± 13.85 8.49 ± 7.41 -5.02 ± 12.08 0.002* -1.960b 0.05
Cont. 7.06 ± 5.34 26.37 ± 36.15 12.26 ± 31.41 -2.397b 0.017*
maximum bite force (kgf) Treat. 6.19 ± 6.47 3.95 ± 3.19 -2.23 ± 7.47 0.027* -1.619b 0.105
Cont. 3.42 ± 1.79 8.69 ± 9.87 2.64 ± 7.59 -1.245b 0.213
maximum contact area (n) Treat. 8.07 ± 5.56 5.93 ± 4.27 -2.13 ± 3.27 0.002* -2.178b 0.029*
Cont. 5.85 ± 4.41 8.46 ± 5.90 1.82 ± 2.36 -2.066b 0.09

Treat. = treatment group (n = 15); Cont. = control group (n = 15).

a Mann-Whitney U-test, b Based on negative ranks, c Based on positive ranks, d Wilcoxon signed-rank test.
J Dent Rehabil Appl Sci 2022;38:204-12 https://doi.org/10.14368/jdras.2022.38.4.204
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