5506
Amira Ibrahim Mohamed Ibrahim
Bending And Torsional Behavior Of Three Rotary Niti Files And Stress Distribution During Instrumentation Of Curved Root Canals (Finite Element Study)
Bending, Torsion , NiTi files , Stress Distribution , Canals cowals
The aim of this study was to use the three dimensional finite element analysis to evaluate: Bending and torsional behavior of WaveOne, Twisted File, and ProTaper rotary NiTi files. Stress distribution in curved root canals during root canal preparation. Nickel-titanium (NiTi) rotary instruments were introduced to improve root canal preparation. The fracture modes of rotary NiTi files could be classified into two types, flexural) fatigue and torsional failure. Thus both torsional stiffness and bending flexibility are essential characteristics for file performance and safety concerns. Knowledge of the distribution of stresses in an instrument can help reduce the chance of fracture during clinical use. Finite element analysis (FEA) offers an efficient way for evaluation of mechanical behavior of endodontic files such as stress distribution, which are difficult to obtain by experimental tests. This study was conducted to evaluate Bending and torsional behavior of WaveOne, Twisted File, and ProTaper rotary NiTi files and stress distribution in curved root canals during root canal preparation using Finite element analysis.
2016
Ph.d
Ain Shams
Dental Medicine