Influence of Temperature on Cyclic Fatigue Resistance of ProTaper Gold and ProTaper Universal Rotary Files

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• 作者：Gianluca Plotino ; DDS ; PhD^&lowast ; ; Nicola M. Grande ; DDS ; PhD^&dagger ; ; Montse Mercadé ; Bellido ; DDS ; PhD^&Dagger ; ; ^{mmercade@uic.es} ; Luca Testarelli ; DDS ; PhD^&lowast ; ; Gianluca Gambarini ; DMD ; DDS^&lowast ;
• 关键词：Heat treatment ; nickel-titanium alloys ; ProTaper Gold ; ProTaper Universal
• 刊名：Journal of Endodontics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：200-202
• 全文大小：119 K
• 卷排序：43

文摘

The study aims to investigate if temperature may have an influence on cyclic fatigue resistance of heat-treated ProTaper instruments (ProTaper Gold [PTG]) compared with the traditional alloy of ProTaper Universal (PTU). PTU showed a statistically significant reduction in fatigue life at intracanal temperature (35°) compared with room temperature (20°) (P < .05). PTG registered no differences in fatigue life between the 2 temperatures tested (P > .05). PTG files exhibited a statistically significant higher cyclic fatigue resistance when compared with the same size of PTU at both temperatures tested.