Table 2: Median, minimum and maximum values of mesiodistal centering ability [CA(MD)] and buccolingual centering ability [CA(BL)].

Files CA(MD) CA(BL)
Median 0.500b 0.418b
ProTaper Next Minimum 0.038 0.022
Maximum 1.000 1.000
Median 0.583b 0.413b
ProTaper Gold Minimum 0.000 0.052
Maximum 0.300 1.000
Median 0.563b 0.600a
Mtwo Minimum 0.011 0.055
Maximum 1.000 1.000
Median 0.700a 0.666a
BioRaCe Minimum 0.071 0.009
Maximum 1.000 1.000
Median 0.531b 0.436b
WaveOne Gold Minimum 0.034 0.066
Maximum 1.000 0.888
Median 0.386c 0.400b
Reciproc Minimum 0.041 0.027
Maximum 0.998 0.998

*In each column, medians with a common superscript letter are not statistically different (p<0.05).