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).