Finite element analysis comparing WaveOne, WaveOne Gold, Reciproc and Reciproc Blue responses with bending and torsion tests

Prados-Privado, María; Rojo, Rosa; Ivorra, Carlos; Prados-Frutos, Juan Carlos

doi:10.1016/j.jmbbm.2018.10.016

Cited by 32 publications

(26 citation statements)

References 41 publications

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“…The WaveOne Gold system (Dentsply Sirona, Ballaigues, Switzerland) uses the same reciprocating kinematics as its predecessor, WaveOne (Dentsply Sirona), but incorporates the benefits of a heat treatment (‘Gold’) that has been reported to provide enhanced flexibility, resistance to cyclic fatigue, and cutting sharpness and efficiency (Adıgüzel & Capar 2017, Prados‐Privado et al . 2019). The thermal treatment is applied predominantly in the martensitic phase and is responsible for imparting a controlled‐memory effect to the files (Gagliardi et al .…”

Section: Introductionmentioning

confidence: 99%

Fracture incidence of WaveOne Gold files: a prospective clinical study

et al. 2020

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AimThis prospective clinical study evaluated the incidence of instrument fracture observed after single‐file root canal treatment of molars using WaveOne Gold instruments.MethodologyThree standardized, experienced and calibrated specialists treated 750 maxillary and mandibular molars with curvatures less than 45° (2691 root canals) over a 12‐month period. All the treatments were performed in a single session. A total of 1104 WaveOne Gold instruments were used, including 38 small, 750 primary, 228 medium and 88 large instruments. Intracanal procedures were performed according to the manufacturer's recommendations, and each instrument was used in a single clinical case. The instruments were examined after their removal from the canal, under an operating microscope at 8× magnification.ResultsNo fractures were observed in any of the 1104 instruments used.ConclusionsNo fractures of WaveOne Gold reciprocating instruments occurred during root canal preparations performed in maxillary and mandibular molars with curvatures less than 45° when used strictly according to the manufacturer's recommendations and applied in a single clinical case.

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Section: Introductionmentioning

confidence: 99%

Fracture incidence of WaveOne Gold files: a prospective clinical study

et al. 2020

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“…It should also be noted that the manufacturing process and heat treatment play a tremendous role in determining material flexibility [24]. Files which are produced by just milling without heat treatment as Protaper F2 displayed lower flexibility [24]. While those exposed to heat treatment showed more flexibility as the crystal structure and phase transformation temperatures are affected [4].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Flexibility, Microstructure and Elemental Analysis of Some Contemporary Nickel-Titanium Rotary Instruments

Hamdy

Galal

Ismail

et al. 2019

Open Access Maced J Med Sci

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BACKGROUND: Contemporary nickel-titanium (NiTi) rotary endodontic instruments had a revolutionary impact on the success of root canal treatment. AIM: To evaluate the flexibility, microstructure and elemental analysis of four different recent NiTi rotary instruments, namely; Wave One Gold, TF adaptive, HyFlex EDM and Gr_Reciproc Blue compared to conventional Protaper Universal (F2). MATERIAL AND METHODS: The NiTi rotary files were subjected to cantilever bending test to evaluate their flexibility. The microstructural characteristics and elemental analysis were examined via scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer (EDX). RESULTS: The TF adaptive, HyFlex EDM and Wave One Gold endodontic files showed significantly lower cantilever bending values (i.e., higher flexibility) than Protaper F2 and Gr_Reciproc Blue (p < 0.05). The SEM micrographs showed that the bulk of all examined files showed multiple striations due to the cutting process, on the other hand, their external surfaces were different: The Protaper Universal F2 showed multiple voids, while the TF Adaptive surface exhibited more uniform structure. The Hyflex EDM had a crater-like surface, whereas Wave one Gold showed machining grooves with minimum defects, while Reciproc Blue displayed machining grooves with random scratch lines. There was a significant difference in bulk and surface elemental analysis of the various examined files, yet composed mainly of the same elements. CONCLUSION: Chemical composition, heat treatment, manufacturing process and geometrical design of the NiTi rotary instrument have a great influence on their flexibility and microstructure.

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“…The present study showed that the effect of the alloy is less important than the crosssection geometry. There are numerous studies relating cross-section diameter to the torsional resistance (Ninan E, Berzins D W (Ninan & Berzins, 2013) Wycoff R C and Berzins D.W (Wycoff & Berzins, 2012), Camara AS et al (Camara et al, 2009, and M. Prados-Privado et al (Prados-Privado et al, 2019)).…”

Section: Discussionmentioning

confidence: 99%

A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files

et al. 2019

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Finite element analysis was used to evaluate the stress distribution, estimate the residual stresses, bending, and amount of displacement of two nickel-titanium instruments manufactured by the same M-wire technology but with different cross-section. Materials and methods: Two brands of Ni-Ti instruments ProTaper NEXT (Dentsply Maillefer), and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland) were scanned with stereomicroscope to produce a two-dimensional model for each file using computer-aided design programs (CAD) (SolidWorks software package), which then was converted into stereolithographic extension to be readable by programming software (MATLAB software) to produce three-dimensional models. The mathematical analysis of files was performed on SolidWorks software package. The mechanical behavior of the two files was analyzed numerically in a SolidWorks package to simulate and measure torsion, bending, and file displacement. Application of a shear moment (torsion) 2.5 N/mm moment of force was applied to the shaft in a clockwise direction, while the last 4 mm of the tip was rigidly constrained to evaluate the stress distribution on each file. As for Cantilever bending, a concentrated load of 1 N at the tip of the file with its shaft rigidly held in place was applied for the finite element models. The vertical displacement was measured and the von Mises stress distribution was evaluated. Results: The WaveOne file showed higher torsional stresses accumulation than those accumulated in the ProTaper NEXT. While the ProTaper NEXT showed more bending and file displacement than those showed by WaveOne file. Conclusions: The two files rotary models highlighted the different mechanical properties of the files although they share the same manufactured technology M-wire. The ProTaper NEXT showed less torsional stress accumulation and more bending properties.

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Finite element analysis comparing WaveOne, WaveOne Gold, Reciproc and Reciproc Blue responses with bending and torsion tests

Cited by 32 publications

References 41 publications

Fracture incidence of WaveOne Gold files: a prospective clinical study

Fracture incidence of WaveOne Gold files: a prospective clinical study

Evaluation of Flexibility, Microstructure and Elemental Analysis of Some Contemporary Nickel-Titanium Rotary Instruments

A comparative finite analysis of the mechanical behavior of ProTaper NEXT and WaveOne rotary files

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