Fig. 5

Load comparisons of the specimens in three groups when the maximum rotation angle was reached in the rotation direction: a left rotation test and b right rotation test. *P < 0.05 indicates that the difference was statistically significant
Load comparisons of the specimens in three groups when the maximum rotation angle was reached in the rotation direction: a left rotation test and b right rotation test. *P < 0.05 indicates that the difference was statistically significant