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Erschienen in: Journal of Materials Engineering and Performance 7/2014

01.07.2014

Influence of Surface Morphology on the Torsion Fracture of NiTi Endodontic Instruments

verfasst von: Carlos Elias, Helio Lopes, Victor Vieira, Leticia Souza, Márcia Vieira

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 7/2014

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Abstract

This study analyzed the influences of manufacturing process (twisting and machining) and surface finishing on the angular distortion, maximum torque, and toughness of two NiTi endodontic instruments (Race—FKG Dentaire and TF—Twisted Files, SybronEndo). Statistical analysis of results showed that TF instruments (twisted) had higher distortion angle (p < 0.05) and lower maximum torque to fracture (p < 0.05) than Race instruments (machined). SEM analysis of fractured instruments showed a surface morphology characteristic of ductile fracture, with plastic deformation in the helical shafts. The results suggest that both instruments are equally suitable for clinical applications. This study is purely scientific as it evaluates only some material properties, and is not intended to endorse a commercial product.

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Metadaten
Titel
Influence of Surface Morphology on the Torsion Fracture of NiTi Endodontic Instruments
verfasst von
Carlos Elias
Helio Lopes
Victor Vieira
Leticia Souza
Márcia Vieira
Publikationsdatum
01.07.2014
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 7/2014
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-014-1043-3

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