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Figure 2. Means and standard deviations of the frictional coefficients for the TMJ after 5 sec, 5 min, 10 min, 20 min, 40 min, and 1 hr of stationary loading duration, with 50 N and 80 N compressive loadings. Error bars are standard deviations (for each group, n = 10). *Significance of difference between the values (p < 0.01) as tested with Scheffé’s test. 
p < 0.0001 compared with the frictional coefficient at 5 min, 10 min, 20 min, 40 min, and 1 hr. White bars = 50 N; black bars = 80 N.
