The canal anatomy conservation is extremely significant considering the fact that the root canal enlargement is able to have an additional impact on tooth weakening, and also makes the restored tooth more susceptible to be fractured in the presence of fiber posts. 11 , 12 , 13 , 14 The results of the present study failed to demonstrate any influence of the file system used on the parameters “change of angle of curvature” and “apical transportation”.
1
—
—