Root Canal Transportation and Centering Ability of Nickel-Titanium Rotary Instruments in Mandibular Premolars Assessed Using Cone-Beam Computed Tomography

Table 1: Mean ± standard deviation values found for root canal transportation (mm) and centering ability (%) in root canals of mandibular premolars (n=16) following preparation with different instruments.

Instrument	Canal transportation	Centering ability
WaveOne Large	0.014 ± 0.118^a	0.624 ± 0.263^b
WaveOne Gold Large	0.039 ± 0.072^a	0.671 ± 0.177^b
Reciproc R50	0.016 ± 0.103^a	0.623 ± 0.219^b
ProTaper Next	-0.008 ± 0.080^a	0.640 ± 0.230^b
ProTaper Gold	0.002 ± 0.068^a	0.779 ± 0.184^b
Mtwo	0.006 ± 0.069^a	0.650 ± 0.223^b
BioRaCe	0.025 ± 0.097^a	0.542 ± 0.168^b
RaCe	0.043 ± 0.088^a	0.609 ± 0.193^b

Note: Same superscript letters within each column indicate absence of statistically significant differences between the groups (P > 0.05).