| Introduction:
The purpose of this study was to evaluate surface topography of WaveOne
Gold (WOG) and WaveOne (WO) files before and after use with SEM.
Methods: Twelve primary files from each system were scanned before
instrumentation at 100x and 750x for surface defects. Each file was used
to instrument six root canals then examined under SEM after preparing
one, three and six canals at the same magnification. Data were scored
and statistically analysed using Mann Whitney and Friedman tests (p≤
0.05). Results: Surface defects were detected before use in both study
groups with significantly higher values in WOG group. The surface
defects significantly increased in both WO and WOG groups after use, WOG
group showed significantly greater defects including metal strips,
pitting, craters, micro-cracks and blunt edges (p≤ 0.05). Conclusion:
WaveOne Gold file has a different metallurgy due to its gold finish
which did not enhance its resistance to surface defects during clinical
use. |
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