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Design, Metallurgical Features, and Mechanical Behaviour of NiTi Endodontic Instruments from Five Different Heat-Treated Rotary Systems

2022-02-01Artigo científico Acesso aberto
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dc.contributor.authorMartins, Jorge N. R.
dc.contributor.authorSilva, Emmanuel J. N. L.
dc.contributor.authorMarques, Duarte
dc.contributor.authorPereira, Mário Rito
dc.contributor.authorVieira, Victor T. L.
dc.contributor.authorArantes-Oliveira, Sofia
dc.contributor.authorMartins, Rui F.
dc.contributor.authorFernandes, Francisco Braz
dc.contributor.authorVersiani, Marco
dc.contributor.institutionDEMI - Departamento de Engenharia Mecânica e Industrial
dc.contributor.institutionUNIDEMI - Unidade de Investigação e Desenvolvimento em Engenharia Mecânica e Industrial
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.pblMolecular Diversity Preservation International (MDPI)
dc.date.accessioned2022-02-18T23:19:30Z
dc.date.available2022-02-18T23:19:30Z
dc.date.issued2022-02-01
dc.descriptionUIDB/50025/2020-2023
dc.description.abstractThe current study aimed to compare the F1 endodontic instruments from five different heat-treated rotary systems regarding their design, metallurgical properties, and mechanical performance. Five F1 root canal shaping instruments (ProTaper Gold [PTG], Premium Taper Gold, Go-Taper Flex, EdgeTaper Platinum, and Super Files Blue)—plus, a conventional ProTaper Universal (PTU)—which were evaluated regarding their design, nickel/titanium ratio, phase transformation temperatures, microhardness, cyclic fatigue, and torsional and bending strengths. Mood's median test was used for the statistical comparison with a significance set at 5%. The instruments were similar regarding the nickel/titanium ratio and overall design. Go-Taper Flex had the closest transformation temperatures to PTG. PTU and Go-Taper Flex had the highest microhardness (408.3 and 410.5 HVN). The time to fracture of Super Files Blue was three and seven times higher than PTG and PTU, respectively. No difference was observed in the maximum torque to fracture among PTG (1.30 N·cm) and the other systems, except for the Premium Taper Gold (1.05 N·cm) and Go-Taper Flex (1.10 N·cm). Significantly lower bending loads than PTG (269.2 gf) were observed for the EdgeTaper Platinum (158.3 gf) and Premium Taper Gold (103.5 gf) instruments. Super Files Blue outperformed PTG in the cyclic fatigue test, while EdgeTaper Platinum and Premium Taper Gold were more flexible. Premium Taper Gold and Go-Taper Flex showed lower torsional strength.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent2899368
dc.identifier.doi10.3390/ma15031009
dc.identifier.issn1996-1944
dc.identifier.otherPURE: 41838483
dc.identifier.otherPURE UUID: 77cf4e51-bf25-437b-a604-56566c4f1ac4
dc.identifier.otherScopus: 85123457938
dc.identifier.otherPubMed: 35160955
dc.identifier.otherPubMedCentral: PMC8840527
dc.identifier.otherORCID: /0000-0003-3185-0019/work/108468888
dc.identifier.otherWOS: 000755269200001
dc.identifier.urihttp://hdl.handle.net/10362/133204
dc.identifier.urlhttps://www.scopus.com/pages/publications/85123457938
dc.language.isoeng
dc.peerreviewedyes
dc.subjectBending load
dc.subjectCyclic fatigue
dc.subjectEndodontics
dc.subjectMicrohardness
dc.subjectRotary system
dc.subjectTorsional resistance
dc.subjectGeneral Materials Science
dc.subjectCondensed Matter Physics
dc.titleDesign, Metallurgical Features, and Mechanical Behaviour of NiTi Endodontic Instruments from Five Different Heat-Treated Rotary Systemsen
dc.typejournal article
degois.publication.issue3
degois.publication.titleMaterials
degois.publication.volume15
dspace.entity.typePublication
rcaap.rightsopenAccess

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