Evaluation of cyclic fatigue resistance of modern Nickel-Titanium rotary instruments with continuous rotation
نویسندگان
چکیده
منابع مشابه
Effect of clinical use on the cyclic fatigue resistance of ProTaper nickel-titanium rotary instruments.
The resistance of ProTaper (Dentsply Maillefer, Ballaigues, Switzerland) nickel-titanium rotary instruments to cyclic fatigue was examined after their initial use in straight or curved canals in vivo. These instruments were rotated freely inside a steel phantom until separation. The number of rotations before failure and the lengths of the separated fragments were compared with data derived fro...
متن کاملCyclic fatigue resistance and three-dimensional analysis of instruments from two nickel-titanium rotary systems.
AIM To determine how instrument design affects the fatigue life of two nickel-titanium (Ni-Ti) rotary systems (Mtwo and ProTaper) under cyclic fatigue stress in simulated root canals. METHODOLOGY Cyclic fatigue testing of instruments was performed in stainless steel artificial canals with radii of curvature of 2 or 5 mm and an angle of curvature of 60 degrees . A total of 260 instruments were...
متن کاملInfluence of continuous or reciprocating motion on cyclic fatigue resistance of 4 different nickel-titanium rotary instruments.
INTRODUCTION The aim of this study was to evaluate the resistance to flexural fatigue of Reciproc R25 (VDW, Munich, Germany), WaveOne Primary (VDW, Munich, Germany), Mtwo (Sweden & Martina, Padova, Italy), and Twisted File (TF; SybronEndo, Orange, CA) instruments used in continuous rotation or in 2 different reciprocating motions. METHODS A total of 180 nickel-titanium files from 4 brands mar...
متن کاملFatigue testing of controlled memory wire nickel-titanium rotary instruments.
INTRODUCTION To improve the fracture resistance of nickel-titanium (NiTi) files, manufacturers have introduced new alloys to manufacture NiTi files and developed new manufacturing processes. This study was aimed to examine the fatigue behavior of NiTi instruments from a novel controlled memory NiTi wire (CM Wire). METHODS Instruments of ProFile, Typhoon (TYP), Typhoon CM (TYP CM), DS-SS025042...
متن کاملcomparison of cyclic fatigue resistance of five nickel titanium rotary file systems with different manufacturing techniques
objectives: the purpose of this study was to evaluate the resistance to fatigue failure of five different nickel-titanium rotary files in three different curved trajectories. materials and methods: a total of 150 neoniti a1, race 25.06, mtwo 25.06, twisted file 25.06 and protaper next x2 files with the tip size of 25 were tested (n=30 for each group). three groove types simulating curved canals...
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ژورنال
عنوان ژورنال: Giornale Italiano di Endodonzia
سال: 2017
ISSN: 1121-4171
DOI: 10.4081/j.gien.2017.23