Deformation of Nickel-Titanium (NiTi) rotary instruments in cyclic loading – in vitro study
نویسندگان
چکیده
منابع مشابه
Cyclic Fatigue of Different Nickel-Titanium Rotary Instruments: A Comparative Study
Since the introduction of nickel-titanium alloy to endodontics, there have been many changes in instrument design, but no significant improvements in the raw material properties, or enhancements in the manufacturing process. Recently, a new method to produce nickel-titanium rotary (NTR) instruments has been developed, in an attempt to obtain instruments that are more flexible and resistant to f...
متن کاملRemedying and preventing endodontic rotary nickel-titanium (NiTi) file breakage.
Of all the procedural problems that can occur when practicing dentistry, endodontic file breakage is one dilemma that not only can lead to extreme stress for the clinician, but can cause great anxiety for the patient as well. Separated rotary nickel-titanium (NiTi) files can also pose an increased risk of post-endodontic complications. Understanding why and how endodontic file breakage occurs, ...
متن کاملPredicting in vivo failure of rotary nickel-titanium endodontic instruments under cyclic fatigue.
The aim of this study was to examine the lifespan or number of cycles to failure of tapered rotary nickel-titanium (Ni-Ti) endodontic instruments. Simulated root canals with different curvatures were used to determine a relation between canal curvature and instrument lifespan. Using a novel mathematical model for the deformation of pseudoelastic Ni-Ti alloy, it was shown that maximum stress nee...
متن کاملCyclic fatigue testing of three different rotary nickel titanium endodontic instruments in simulated curved canals - an in vitro sem analysis.
INTRODUCTION Instrument separation is a serious concern in endodontics. Stainless steel instruments usually deform before they separate whereas Nickel Titanium instruments do not show any sign of deformation. AIM of the present study was to compare the cyclic rotations needed to fracture three different rotary nickel titanium endodontic instruments namely Profile, K3 Endo, RaCe in simulated c...
متن کاملAn in vitro assessment of the physical properties of novel Hyflex nickel-titanium rotary instruments.
AIM To determine several properties including torsional and fatigue limits, as well as torque during canal preparation, of Hyflex, a rotary instrument manufactured from so-called controlled memory nickel-titanium alloy. METHODOLOGY The instruments were tested in vitro using a special torque bench that permits both stationary torque tests according to ISO3630-1 and fatigue limit determination,...
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ژورنال
عنوان ژورنال: Stomatoloski glasnik Srbije
سال: 2018
ISSN: 1452-3701
DOI: 10.2478/sdj-2018-0006