Table 2. The quantitative analysis of surface roughness parameters (µm) of tested instruments following root canal instrumentation.
| Scanned location | NiTi instrument |
Sq
a
Mean ± SD |
Sa
a
Mean ± SD |
Sz
a
Mean ± SD |
|---|---|---|---|---|
| Abbreviations: ANOVA, analysis of variance; NiTi, nickel titanium; PTG, ProTaper Gold; PTN, ProTaper Next; Sa, average surface roughness value; SD, standard deviation; Sq, root mean square roughness; Sz, peak to valley height; WOG, WaveOne Gold. a The Sq, Sa, Sz were measured in micrometers (µm). b The significance level ( p ≤0.05). | ||||
| Blade | PTN | 7.07 ± 1.06 | 5.60 ± 0.72 | 29.25 ± 10.40 |
| WOG | 13.82 ± 1.00 | 12.24 ± 1.54 | 55.82 ± 4.91 | |
| PTG | 6.35 ± 0.52 | 4.60 ± 1.03 | 39.94 ± 1.78 | |
|
ANOVA
b
p -value |
0.000 | 0.000 | 0.000 | |
| Flute | PTN | 0.53 ± 0.05 | 0.44 ± 0.05 | 2.57 ± 0.21 |
| WOG | 0.77 ± 0.06 | 0.66 ± 0.06 | 3.38 ± 0.46 | |
| PTG | 0.71 ± 0.09 | 0.65 ± 0.11 | 4.18 ± 0.42 | |
|
ANOVA
b
p -value |
0.005 | 0.001 | 0.000 | |