ArticleBMC oral health2022
Evaluation of design, mechanical properties, and torque/force generation of heat-treated NiTi glide path instruments.
Article in BMC oral health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Impact of root canal shaping using TruNatomy on postoperative pain and operative torque generation: a randomized clinical trial.BMC oral health · 2025Trial
- Impact of Downward Load and Rotational Kinematics on Root Canal Instrumentation with a Heat-Treated Nickel-Titanium Rotary Instrument.Materials (Basel, Switzerland) · 2025Article
- A comparative study of glide path instruments assessing flexibility and torsion by finite element method.Journal of clinical and experimental dentistry · 2025Review
- Comparison of mechanical properties and shaping performance of ProGlider and ProTaper ultimate slider.BMC oral health · 2025Article
- Glide Path in Endodontics: A Literature Review of Current Knowledge.Dentistry journal · 2024Review
- Screw-in force, torque generation, and performance of glide-path files with three rotation kinetics.Odontology · 2024Article
- Dynamic torque and screw-in force of four different glide path instruments assessed in simulated single- and double-curved canals: An in vitro study.Journal of dental sciences · 2023Article
- Scanning Electron Microscopic Analysis of Deformation of TruNatomy File Systems: An Ex-vivo Study.Cureus · 2023Article
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Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundRecently, various kinds of heat-treated nickel-titanium (NiTi) glide path instruments have been manufactured. This study aimed to investigate design, phase transformation behavior, mechanical properties of TruNatomy Glider (#17/02), V Taper 2H (#14/03), and HyFlex EDM (#15/03) and compare torque/force generated during simulated glide path preparation with them.
methodsThe designs and phase-transformation behaviors of the instruments were examined via scanning electron microscopy (n = 3) and differential scanning calorimetry (n = 2). Their bending (n = 15), torsional (n = 15), and cyclic fatigue resistances (n = 15) were tested. The ultimate strength and distortion angle were obtained from torsional resistance test. The number of cycles to failure (NCF) was calculated from cyclic fatigue resistance test. The preparation of the glide path was simulated using a double-curved artificial canal (n = 15), and the maximum torque and screw-in forces were measured. Data except NCF was compared between brands with one-way ANOVA with Tukey's honestly significant difference test. NCF was analyzed via Kruskal-Wallis and Mann-Whitney U tests.
resultsTruNatomy Glider had the greatest number of threads. TruNatomy Glider showed progressive taper, while V Taper 2H and HyFlex EDM had constant taper. The austenitic transformation-finish temperatures of all the instruments were above body temperature. V Taper 2H demonstrated significantly lower ultimate strength, higher distortion angle, and a higher number of cycles to failure compared with HyFlex EDM and TruNatomy Glider (p < 0.05). The maximum torque generated during preparing glide path was lowest for V Taper 2H, and the maximum screw-in force was lowest for HyFlex EDM (p < 0.05). TruNatomy Glider generated the highest torque and screw-in force during the apical preparation.
conclusionsV Taper 2H #14/03 showed superior cyclic fatigue resistance and lower ultimate strength. TruNatomy Glider generated greater clockwise torque and screw-in force during apical preparation. The mechanical properties, torque, and screw-force was affected by design of heat-treated glide path instruments. Cervical pre-flaring prior to glide path instrument is recommended.
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