Oral Biology Research

Table. 3.

The average force, hysteresis and unload/peak ratio during repeated extension of Energy chain (RMO, Denver, CO, USA) and the percentage of the residual force to the force at the first extension

Cycle 12.5 mm peak 11.5 mm load 1 mm unload Hysteresis 1-mm-unload/peak ratio
1st cycle 398.85±8.1a 385.6±7.9a 326.4±7.1a 59.2±1.5a 81.8±0.37%d
100% 100% 100% 100%
2nd cycle 385.3±8.0b 349.0±7.3b 320.5±7.2b 28.6±1.0b 83.2±0.28%c
96.6±0.33% 90.5±0.37% 98.2±0.37% 48.3±1.8%
3rd cycle 379.1±8.4c 340.0±7.4c 316.8±7.5c 23.2±1.3c 83.6±0.33%b
95.0±0.42% 88.2±0.38% 97.0±0.45% 39.2±2.3%
4th cycle 374.5±8.3d 334.6±7.7d 314.3±7.5d 20.3±1.4d 83.9±0.36%a
93.9±0.50% 86.8±0.46% 96.3±0.46% 34.3±2.2%
5th cycle 371.5±8.7e 330.9±7.8e 312.1±7.8e 18.8±1.3e 84.0±0.39%a
93.1±0.55% 85.8±0.50% 95.6±0.54% 31.7±2.1%

Values are presented as mean±standard deviation. Unit: gram-force (gf).

a,b,c,d,eDifferent letters indicate significant statistical differences among cycles (p<0.05, Tukey HSD test).

Oral Biol Res 2022;46:71~77 https://doi.org/10.21851/obr.46.02.202206.71
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