Original Article
Effect of Environment on Cyclic Fatigue of Nickel Titanium Rotary Instruments – An In vitro Study
Author(s):
Abdulaziz Saad Abu-Melha*
Background: During various sterilization procedures of NiTi instruments adversely affect their fracture resistance due to surface corrosion or roughness making them vulnerable to cyclic fatigue. Aim: To evaluate the resistance to cyclic fatigue from repeated cleaning and sterilization procedures on corrosion of NiTi rotary files under various concentrations of Sodium Hypochlorite (NaOCl) and autoclave sterilization. Materials and methods: A total of 60 NiTi files (ProTaper S1) divided into 6 groups (n=10) according to the environment in which the cyclic fatigue test was to be studied were subjected to different methods of sterilization involving autoclaving at 121°C and immersion in 1% NaOCl and 5.25% NaOCl in this study using root canal models (Curved canal, DENTSPLY, USA) simulating a curved root can.. Read More»
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The Annals of Medical and Health Sciences Research is a bi-monthly multidisciplinary medical journal.