The effect of electrical treatment on cyclic fatigue of NiTi instruments

Mohammad Ali Saghiri, Armen Asatourian, Franklin Garcia-Godoy, James L. Gutmann, Mehrdad Lotfi, Nader Sheibani

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Dentists desire to use NiTi rotary instruments, which do not break inside the root canals of teeth, since the pieces from broken files are difficult to remove. The NiTi rotary instrument breakage is because of cyclic and torsional fatigue. Here the low-voltage (12 V) and high voltage (24 V) electrical treatments were used to enhance the cyclic fatigue of NiTi rotary instruments and increase their durability. In excremental groups, following electrical treatment samples of the NiTi instruments were rotated inside artificial root canals until they broke. Our results showed that electrical treatment with 12-V DC was effective in restoring NiTi instrument's resistance to cyclic fatigue. The scanning electron microscopy images and fractograph of samples exposed to 12-V electrical treatment showed a more regular texture over the surface with less dimpling on fractured site. These patterns can improve the super elasticity of tested devices during rotational movement, and delay the NiTi instruments separation in root canal preparations.

Original languageEnglish (US)
Pages (from-to)507-511
Number of pages5
JournalScanning
Volume36
Issue number5
DOIs
StatePublished - Jan 1 2014

Fingerprint

Fatigue of materials
canals
Canals
dimpling
Electric potential
teeth
durability
files
low voltage
high voltages
Elasticity
Durability
textures
elastic properties
Textures
direct current
preparation
Scanning electron microscopy
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Instrumentation

Cite this

Saghiri, M. A., Asatourian, A., Garcia-Godoy, F., Gutmann, J. L., Lotfi, M., & Sheibani, N. (2014). The effect of electrical treatment on cyclic fatigue of NiTi instruments. Scanning, 36(5), 507-511. https://doi.org/10.1002/sca.21146

The effect of electrical treatment on cyclic fatigue of NiTi instruments. / Saghiri, Mohammad Ali; Asatourian, Armen; Garcia-Godoy, Franklin; Gutmann, James L.; Lotfi, Mehrdad; Sheibani, Nader.

In: Scanning, Vol. 36, No. 5, 01.01.2014, p. 507-511.

Research output: Contribution to journalArticle

Saghiri, MA, Asatourian, A, Garcia-Godoy, F, Gutmann, JL, Lotfi, M & Sheibani, N 2014, 'The effect of electrical treatment on cyclic fatigue of NiTi instruments', Scanning, vol. 36, no. 5, pp. 507-511. https://doi.org/10.1002/sca.21146
Saghiri MA, Asatourian A, Garcia-Godoy F, Gutmann JL, Lotfi M, Sheibani N. The effect of electrical treatment on cyclic fatigue of NiTi instruments. Scanning. 2014 Jan 1;36(5):507-511. https://doi.org/10.1002/sca.21146
Saghiri, Mohammad Ali ; Asatourian, Armen ; Garcia-Godoy, Franklin ; Gutmann, James L. ; Lotfi, Mehrdad ; Sheibani, Nader. / The effect of electrical treatment on cyclic fatigue of NiTi instruments. In: Scanning. 2014 ; Vol. 36, No. 5. pp. 507-511.
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