Abstract
The use of nickel-titanium rotary files has been accepted worldwide. One of the major concerns about its use is the chance of file separation. Two types of failure have already been identified: cyclic fatigue and torsional failure. A scanning electron microscope analysis was performed on a recent case of file separation. The scan was used to show the main characteristics of torsional failure and to compare these characteristics with a known example of cyclic fatigue type failure. The clinical reasons that may lead to such failure are also discussed.
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Schedule a callMore From: Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
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