Validated finite element analyses of WaveOne Endodontic Instruments: a comparison between M-Wire and NiTi alloys
International endodontic journal | 14 Jun 2014
N Bonessio, E Pereira, G Lomiento, A Arias, M Bahia, V Buono and O Peters
To validate torsional analysis, based on finite elements, of WaveOne instruments against in vitro tests and to model the effects of different nickel titanium materials METHODOLOGY: WaveOne reciprocating instruments (Small, Primary and Large, n=8 each, M-Wire) were tested under torsion according to standard ISO 3630-1. Torsional profiles including torque and angle at fracture were determined. Test conditions were reproduced through Finite Element Analysis (FEA) simulations based on micro CT scans at 10μm resolution; results were compared to experimental data using analysis of variance and two-sided one sample t-tests. The same simulation was performed on virtual instruments with identical geometry and load condition, based on M-Wire or conventional NiTi alloy.
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