. 2020 May 14;5(2):118–122. doi: 10.14744/eej.2019.86570

TABLE 2.

Root canal centring ability (mm±standard deviation) for the Coronal, Middle, and Apical Thirds after preparation with R25, PF+R25, RB25 and PF+RB25

Groups	Apical third	Middle third	Coronal third
R25 (n=30)	0.5455±0.2829^a	0.5914±0.2292^a	0.6297±0.2491^a
PF+R25 (n=30)	0.6711±0.1891^b	0.7450±0.1508^b	0.7606±0.1927^b
RB25 (n=30)	0.5723±0.2604^a	0.6142±0.2064^a	0.6056±0.2882^a
PF+RB25 (n=30)	0.6862±0.1538^b	0.7783±0.1452^b	0.7729±0.1764^b

Values with the same superscript letter were not statistically different