Fig. 4

The distribution of the velocity field of CaseA1 at 1/4T, 1/2T, 3/4T, and T within one period (T) in the apical part of the root canal
The distribution of the velocity field of CaseA1 at 1/4T, 1/2T, 3/4T, and T within one period (T) in the apical part of the root canal