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A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System

This study aimed to compare three endodontic rotary systems. The new Genius Proflex (25/0.04), Vortex Blue (25/0.04), and TruNatomy (26/0.04v) instruments (n = 41 per group) were analyzed regarding design, metallurgy, and mechanical performance, while shaping ability (untouched canal walls, volume o...

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Autores principales: Silva, Emmanuel J. N. L., Martins, Jorge N. R., Ajuz, Natasha C., Antunes, Henrique S., Vieira, Victor T. L., Braz Fernandes, Francisco M., Belladonna, Felipe G., Versiani, Marco A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9369791/
https://www.ncbi.nlm.nih.gov/pubmed/35955223
http://dx.doi.org/10.3390/ma15155288
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author Silva, Emmanuel J. N. L.
Martins, Jorge N. R.
Ajuz, Natasha C.
Antunes, Henrique S.
Vieira, Victor T. L.
Braz Fernandes, Francisco M.
Belladonna, Felipe G.
Versiani, Marco A.
author_facet Silva, Emmanuel J. N. L.
Martins, Jorge N. R.
Ajuz, Natasha C.
Antunes, Henrique S.
Vieira, Victor T. L.
Braz Fernandes, Francisco M.
Belladonna, Felipe G.
Versiani, Marco A.
author_sort Silva, Emmanuel J. N. L.
collection PubMed
description This study aimed to compare three endodontic rotary systems. The new Genius Proflex (25/0.04), Vortex Blue (25/0.04), and TruNatomy (26/0.04v) instruments (n = 41 per group) were analyzed regarding design, metallurgy, and mechanical performance, while shaping ability (untouched canal walls, volume of removed dentin and hard tissue debris) was tested in 36 anatomically matched root canals of mandibular molars. The results were compared using one-way ANOVA, post hoc Tukey, and Kruskal–Wallis tests, with a significance level set at 5%. All instruments showed symmetrical cross-sections, with asymmetrical blades, no radial lands, no major defects, and almost equiatomic nickel–titanium ratios. Differences were noted in the number of blades, helical angles, cross-sectional design, and tip geometry. The Genius Proflex and the TruNatomy instruments had the highest and lowest R-phase start and finish temperatures, as well as the highest and lowest time and cycles to fracture (p < 0.05), respectively. The TruNatomy had the highest flexibility (p < 0.05), while no differences were observed between the Genius Proflex and the Vortex Blue (p > 0.05). No differences among tested systems were observed regarding the maximum torque, angle of rotation prior to fracture, and shaping ability (p > 0.05). The instruments showed similarities and differences in their design, metallurgy, and mechanical properties. However, their shaping ability was similar, without any clinically significant errors. Understanding these characteristics may help clinicians to make decisions regarding which instrument to choose for a particular clinical situation.
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spelling pubmed-93697912022-08-12 A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System Silva, Emmanuel J. N. L. Martins, Jorge N. R. Ajuz, Natasha C. Antunes, Henrique S. Vieira, Victor T. L. Braz Fernandes, Francisco M. Belladonna, Felipe G. Versiani, Marco A. Materials (Basel) Article This study aimed to compare three endodontic rotary systems. The new Genius Proflex (25/0.04), Vortex Blue (25/0.04), and TruNatomy (26/0.04v) instruments (n = 41 per group) were analyzed regarding design, metallurgy, and mechanical performance, while shaping ability (untouched canal walls, volume of removed dentin and hard tissue debris) was tested in 36 anatomically matched root canals of mandibular molars. The results were compared using one-way ANOVA, post hoc Tukey, and Kruskal–Wallis tests, with a significance level set at 5%. All instruments showed symmetrical cross-sections, with asymmetrical blades, no radial lands, no major defects, and almost equiatomic nickel–titanium ratios. Differences were noted in the number of blades, helical angles, cross-sectional design, and tip geometry. The Genius Proflex and the TruNatomy instruments had the highest and lowest R-phase start and finish temperatures, as well as the highest and lowest time and cycles to fracture (p < 0.05), respectively. The TruNatomy had the highest flexibility (p < 0.05), while no differences were observed between the Genius Proflex and the Vortex Blue (p > 0.05). No differences among tested systems were observed regarding the maximum torque, angle of rotation prior to fracture, and shaping ability (p > 0.05). The instruments showed similarities and differences in their design, metallurgy, and mechanical properties. However, their shaping ability was similar, without any clinically significant errors. Understanding these characteristics may help clinicians to make decisions regarding which instrument to choose for a particular clinical situation. MDPI 2022-07-31 /pmc/articles/PMC9369791/ /pubmed/35955223 http://dx.doi.org/10.3390/ma15155288 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Silva, Emmanuel J. N. L.
Martins, Jorge N. R.
Ajuz, Natasha C.
Antunes, Henrique S.
Vieira, Victor T. L.
Braz Fernandes, Francisco M.
Belladonna, Felipe G.
Versiani, Marco A.
A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title_full A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title_fullStr A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title_full_unstemmed A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title_short A Multimethod Assessment of a New Customized Heat-Treated Nickel–Titanium Rotary File System
title_sort multimethod assessment of a new customized heat-treated nickel–titanium rotary file system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9369791/
https://www.ncbi.nlm.nih.gov/pubmed/35955223
http://dx.doi.org/10.3390/ma15155288
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