Corrosion of Ni-Ti Rotary Instruments: A Review
Publish place: Journal of Dental Materials and Techniques، Vol: 8، Issue: 4
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JDMT-8-4_008
تاریخ نمایه سازی: 4 آذر 1398
Abstract:
The nickel-titanium (Ni-Ti) alloys used in endodontics contain 56% Ni and 44% Ti. The 2 unique features related to clinical dentistry (i.e., shape memory effect and superelasticity) are due to the transition from austenite to martensite in Ni-Ti alloy. When a superelastic Ni-Ti alloy undergoes a low tensile loading, normal elastic behavior occurs. In fact, at higher tensile loads, the elastic stress may reach a level at which there is extended horizontal region of elastic strain. The shape-memory property of Ni-Ti is derived from an atomic arrangement different from that of alloys like stainless steel. The purpose of this paper was to review the unique features of this alloy and mechanism of corrosion.
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Authors
Zahed Mohammadi
Adjunct Clinical Professor of Endodontics, Iranian Center for Endodontic Research (ICER), Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran and Iranian National Elites Foundation, Tehran, Iran
Jun-Ichiro Kinoshita
Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
Atsufumi Manabe
Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
Mikihiro Kobayashi
Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
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