Mechanical Behavior of a NiTi Endodontic File During Insertion in an Anatomic Root Canal Using Numerical Simulations

Legrand, Vincent; Moyne, Sylvain; Pino, Laurent; Chirani, Shabnam Arbab; Calloch, Sylvain; Chevalier, Valérie; Chirani, Reza Arbab

doi:10.1007/s11665-015-1799-0

Cited by 10 publications

(7 citation statements)

References 35 publications

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“…Some studies were not clear on how they obtained their file geometry for proprietary files, but stated the use of computer-assisted design (CAD) software. [21,27,34,[42][43][44][45] In all of the above studies, the reverse engineering process assumed a perfect copy of a real-life endodontic file.…”

Section: Modelling Of Proprietary Endodontic Instrumentsmentioning

confidence: 99%

“…Ha et al, 2015 [22] 3 root canals modelled, each with 2 segments: straight coronal segment (7.6 mm length, 1.6 mm diameter) and curved apical segment (9.4 mm arc length, 0.4 mm foramen size, apical taper 0.07). Three curvatures modelled with the above parameters: (i) 15°, 35.9 mm radius, (ii) 30°, 18 mm radius (iii) 45°, 12 mm radius 4 rotations Legrand et al, 2015 [44] Micro-CT of extracted human first maxillary molar at 30 μm resolution and translated with modelling software. Geometry of the canal with greatest curvature chosen for numerical simulations N/A Mutlu et al, 2015 [24] Micro-CT of extracted maxillary molar tooth and translated with MIMICS13 software.…”

Section: N/amentioning

confidence: 99%

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Finite element analysis of rotary nickel‐titanium endodontic instruments: A critical review of the methodology

Chien

Walsh

Peters

2021

European J Oral Sciences

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Finite element analysis has been a valuable research tool for rotary nickel-titanium endodontic files over the last two decades. This review aims to summarise and critique the methodology as used in currently available endodontic literature for finite element analysis of rotary nickel-titanium instruments. An electronic literature research in PubMed and Scopus databases was performed using the appropriate search terms, and the titles and abstracts were screened for relevance. The review revealed an inconsistent approach to the finite element method, particularly with regards to the boundary conditions in which the instruments are tested. Moreover, there is a lack of experimental data to validate in silico findings. A standardised protocol to finite element analysis of rotary endodontic instruments could be considered for future studies.

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Section: Modelling Of Proprietary Endodontic Instrumentsmentioning

confidence: 99%

Section: N/amentioning

confidence: 99%

Finite element analysis of rotary nickel‐titanium endodontic instruments: A critical review of the methodology

Chien

Walsh

Peters

2021

European J Oral Sciences

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“…The use of NiTi alloys in endodontic instruments had an enormous impact on endodontic practice. These alloys exhibit greater flexibility when compared with stainless steel 1 . Also, NiTi alloy presents superior biocompatibility and corrosion resistance 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Effects of Heat Treatment and Design on Mechanical Responses of NiTi Endodontic Instruments: a Finite Element Analysis

et al. 2020

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Heat treatments and geometries have a significant influence on the mechanical behavior of endodontic files. Finite element analyses were performed to verify the effects due to each of these parameters in NiTi files. Two designs and three NiTi atomic structures (resultant from different heat treatments) were selected for this study. The geometries of the ProTaper Next X1 and ProTaper Universal S2 files, and the structures of fully austenitic (conventional superelastic), austenite treated, and fully R-phased were used. The mechanical responses were evaluated under flexion and torsion loading conditions described by ISO 3630-1 specification. According to the results, the design of the X1 file exhibit higher flexibility in comparison to the S2 model. Under torsional loads, S2 showed higher stiffness. The structures of fully austenitic showed the least flexibility under flexion and the highest torsional stiffness. The stress levels reached for the austenitic condition were uppermost. The treated condition that resulted in a fully R-phase file usually presented a higher level of flexibility with lower stress levels, indicating a longer life in fatigue when compared to the other treatments.

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“…In endodontics, most of the numerical investigations on NiTi file behavior consist in comparisons of the mechanical behavior of instruments under bending or torsion, while varying either the geometrical parameters (Ref [20][21][22][23][24][25][26][27][28] or the NiTi alloy employed ( Ref 16,[29][30][31][32]. To approximate the real conditions of use, the insertion of a file in a geometrical root canal was simulated and the behavior of the instrument was studied (Ref [33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of Numerical Simulations of a New-Generation NiTi Endodontic File Under Bending

Chevalier

Pino

Chirani

et al. 2018

J. of Materi Eng and Perform

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The superelasticity of NiTi shape memory alloy has been used in endodontics since the 1990s. To study the mechanical behavior of endodontic instruments, a traditional approach consists in experimental investigations. However, finite element analysis constitutes another way to assess their mechanical behavior and to facilitate their design. The main aim of this study is to compare experimental and numerical bending results on different structures (NiTi wire, spreader, and instruments) to estimate the reliability of the finite element simulations. These investigations were carried out as follows. Firstly, experimental material parameters identification was performed using NiTi wires. These parameters were implemented in an appropriate NiTi model. Bending was numerically applied to the meshed structures generated by the finite element method. Experimental tests were performed on real structures under bending, with exactly the same loading, in order to compare experimental and numerical results. These results were in good agreement for each of the considered structures. This enabled the validation of the simulation results and the use of simulations to design new endodontic instruments.

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Mechanical Behavior of a NiTi Endodontic File During Insertion in an Anatomic Root Canal Using Numerical Simulations

Cited by 10 publications

References 35 publications

Finite element analysis of rotary nickel‐titanium endodontic instruments: A critical review of the methodology

Finite element analysis of rotary nickel‐titanium endodontic instruments: A critical review of the methodology

Effects of Heat Treatment and Design on Mechanical Responses of NiTi Endodontic Instruments: a Finite Element Analysis

Experimental Validation of Numerical Simulations of a New-Generation NiTi Endodontic File Under Bending

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