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Year : 2018  |  Volume : 8  |  Issue : 5  |  Page : 386-390

Nickel–Titanium rotary instruments: Development of the single-file systems

Endodontology Research Center, School of Dentistry, Kerman University of Medical Sciences and Health Services; Department of Endodontics, Kerman Dental School, Kerman, Iran

Correspondence Address:
Dr. Maryam Kuzekanani
Department of Endodontics, Kerman Dental School, Kerman University of Medical Sciences and Health Services, Kerman
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jispcd.JISPCD_225_18

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Over the past two decades, the nickel–titanium (NiTi) rotary instruments have highly improved the quality of the cleaning and shaping of the root canals. The superelasticity and shape memory of these instruments reduce the possibility of the canal transportation along with saving the time for both the patients and the clinicians. Several commercial types of these instruments, produced by different manufacturers, have currently become available by modifying the characteristics of the wonder NiTi alloy and also the cross-sectional shapes, cutting edges, tapering and numbers and distances of the flutes of the instruments. Up to this date, five generations for NiTi rotary instruments have been described according to the time of introduction, properties, and method of application. The aim of this article is to review the evolution of these five generations of NiTi rotary instruments since their inception.

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