highly significantP < 0.001
For both groups, there was a significant difference between the apical third and the other two-thirds, however, the difference between coronal and middle thirds was not statistically highly significant ( P < 0.001).
For both groups, there was a significant difference between the apical third and the other two-thirds, however, the difference between coronal and middle thirds was not statistically highly significant ( P < 0.001).