Wednesday, January 03, 2018

Evaluation of surface characteristic changes of WaveOne Gold and WaveOne single reciprocating files using scanning electron microscopy: An in-vitro study.


Articles in Press, Accepted Manuscript , Available Online from 23 December 2017  XML PDF (519 K)
Document Type: Original Article
DOI: 10.22038/jdmt.2017.10004





Abstract
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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