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LABORATORY COMPARISON OF CYCLIC FATIGUE RESISTANCE OF WAVEONE GOLD AND RECIPROC FILE SYSTEMS
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Abstract
Objectives: To compare the fatigue resistance of two new NiTi file systems in Vietnam: WaveOne Gold (WO Gold; Dentsply Maillefer, Ballaigues, Switzerland) and Reciproc (VDW, Munich, Germany) which has the same reciproccating motion mode. Materials and methods: An in vitro comparision of cyclic fatigue test of 08 WO Gold Primary (25/0.07) and 08 Reciproc R25 (25/0.08) was performed in a 90-degree curved artificial canal until failure. Both groups were controlled by a motor with reciprocating motion mode for each group: WAVEONE ALL (has a speed of 350 rpm) and RECIPROC ALL (has a speed of 300 rpm). The time to failure was recorded. The number of cycles to failure (NCF) for each file was calculated by multiplying the time by the rotational speed. NCF represented cycle fatigue resistance of files. Results: WO Gold Primary files had significantly higher NCF (801,06 ± 62,71) than Reciproc R25 (648,41 ± 31,65). Conclusion: WO Gold Primary fileswere associated with a significantly higher cyclic fatigue resistance than Reciproc R25 files in a 90-degree curved artificial canal.
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Keywords
Cyclic fatigue resistance, reciprocating motion
References
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